The 5th Cylon is Voltron-esque Hera Agathon & Nick Tyrol

There are two half-cylon/half-human babies: Hera Agathon and Nicholas Tyrol. In a move that would surely remind us of Voltron, Hera and Nick transform and combine to become the 5th Cylon. For those of you 23 and under, Voltron is like the Power Rangers robot, only way f'ing tougher.

Why it works:
We all know that the human/cylon babies are very important to the Cylons. Throughout the entire series we've seen episodes that detail visions by Caprica-Six, Gaius Baltar, Laura Roslin and Sharon "Athena" Agathon with Hera. Many of the visions predict that Caprica-Six and Baltar will raise Hera. Could it be that the one thing we haven't seen in the visions is Hera and Nicholas becoming a single, Voltron-like being that turns out to be the final 5th Cylon?

In addition, the Cylons were having a hard time procreating amonst each other, right? They believed that the missing ingredient was love. The Cylons have said the "God is love." Now, Athena and Helo as well as Chief and Cally(RIP) successfully mated and produced children. Perhaps the two babies will merge into a single, Voltron-esque entity and become the final 5th Cylon. And maybe, just maybe, that final Cylon will be the Cylon God?

Why it doesn't work:
Well, having two babies tranform into a single human/cylon Voltron-esque baby is just plain stupid. While I'd love for there to be some kind of Voltron reference in BSG, I think this would be taking it too far.

Also, I've had a few too many glasses of vino and I'm, more or less, drunk. So, you know, take this post with a grain of salt.

Odds I'm right:
1984:1

The 5th Cylon is a Terrian from Earth 2

Earth 2 was a great show, wasn't it? Sure it lasted only one season, but the premise was sweet -- Mankind had all but left Earth behind to live on space stations when some colonists crash-land on an alien planet, begin the long trek to their originally designated landing place, facing both alien and human threats. Now imagine this, what if these colonists were ancestors of the very same Earthlings from OE (original Earth)? Then... the colonists find E2 (Earth 2) and set up shop. Then they evolve and eventually flee the galaxy to create the 12 colonies. Which is where we left off -- the Cylons and Colonial Fleet have found E2! Talk about crossover cream dream!!!

Why it works:

So the humans stop living on E2 because of some crazy reason (nuclear war causes huge amounts of radiation). They move across galaxies and become the Colonial Fleet as we know it. Then the Colonial Fleet comes back to E2, (not OE, that's a dead planet now, duh) and finds that it's super radioactive. They establish some living zones and what-not, only to be terrorized by creepy gray tall guys with sticks (aka Terrians) that can jump/slide/whatever out of the ground (radiation can't get deep underground, I read it on Wikipedia). First of all, freaky. Secondly, sweetest Cylon EVAR!

Even better, Clancy Brown and Ronald D. Moore have a working history (see Carnivale). Seeing that Brown was on Earth 2 (the show, not E2 the planet), Moore would feel overly comfortable working with him to make sure things are portrayed correctly on E2 (historically speaking, of course).

Why it doesn’t work:
Earth 2 was cancelled after one season. With only 21 episodes under its belt, there's hardly enough to grasp onto to make a successful sci-fi crossover. Plus the Terrians have no personality, nor do they talk. They just stand around, steal kids and slide in and out of sand and caves. And they're ugly. They probably stink, too. If you think about it, they're really like a mix between moles and potatoes.

Odds that I’m right:
29,877,119:1

The 5th Cylon is *yawn* Chick President

Could the President be misleading the humans to their death? Does she really enjoy awkwardly kissing Adama? Do Cylons grow hair back after chemo? Who knows, but ol' Chick President could be the 5th Cylon.

Why it works:
Ever since Laura Roslin was diagnosed with Cancer she's had "visions." The most notable one is the one from the Kobol Opera House that features her, ShaBoomTha, Caprica Six and Baltar. The reason this is important is because Baltar has not had such a vision, or dream. The others that have -- ShaBoomTha and Six -- are Cylons. Unless something super crazy is going on, how could two Cylons and a human have the same dream?

Just like having Commander Adama being the last Cylon, this fits too well with the President being in such a position of power. Conflict would ensue as to where loyalties would lie.

Why it doesn’t work:
It's too easy. It's too expected. The show talks about destiny and foreshadows a lot, but this wouldn't quite fit the aha moment we're all expecting. Would it be executed well? Sure. Is it what we're wanting? Jury is out.

Odds that I’m right:
3:1 (this is a pretty realistic one)

The 5th Cylon is the Great Gazoo

You all know the Great Gazoo, the tiny, green, floating alien, from The Flintstones, right? I mean, sure he was exiled to Earth from his home planet Zatox as punishment for having invented a doomsday machine, but he made it on a whim with no intent of using it. Sound familiar? Exactly, it kinda does, but really doesn't.

Why it works:

If you recall on The Flintstones, Gazoo was only seen by Fred and Barney (and the animals and Pebbles and Bam-Bam, if you count inept beings). In fact, there were times when Fred was having a conversation with Gazoo, and Wilma thought Fred was talking to himself. Hmmm, think that the writers had Gazoo in mind when they created Baltar's Six? Well, not only do I think that Gazoo was the inspiration here, but I think he could be the last Cylon. Maybe.

He built a doomsday device, but never used it. So he has a better conscience than the other Cylons, but that doesn't mean he won't ever use it. It would make a very interesting storyline on Earth if only a few humans could see him. Why not make the President Lady super loopy from her drugs and discover Gazoo. NO ONE would believe her and we'd all be sitting there screaming at the TV that he's real! Oh, the horror.

Why it doesn’t work:
He's a fraking cartoon. Plus he was voiced by Harvey Korman -- who's no longer with us. :(

Odds that I’m right:
19,855:1

The 5th Cylon is ShaBoomTha

So wait, there's Caprica Six, Baltar's Inner Six, Shelly Godfrey, Gina Inviere, Natalie and even more than that? I don't know about you, but with all the multiple models running around, it gets a bit confusing. And not only does Six have multiple models, but so does number Eight (aka, Sharon, Boomer and/or Athena, or ShaBoomTha). Who knows, maybe there's a twin Cylon running around out there. We ARE waiting on number Seven, who's to say that ShaBoomTha doesn't have a twin sister (totally NOT a brother) running around out there?

Why it works:

Twin Cylons! What a concept! And we've been kinda lax on the ShaBoomTha storylines as of late, so let's thrust her, AND her twin, back into the mix. First off, it would just be wacky (think Parent Trap with a Colonial Fleet flavor). But it really lends itself to some great episode arcs -- Helo fraks the wrong one, Hera doesn't know which one is her mom, and then the whole doppleganger two-parter would rule.

The twin angle really works because there wouldn't have to be some huge back story. Nor do they have to increase an actor's pay, she's already playing multiple parts as it is. Maybe the twin parts her hair the other way, or is left-handed instead of right. She could even just be a mirror opposite of ShaBoomTha, so her name would be AhtMoobAhs (similar to the Cobra Twins).

Why it doesn’t work:
Would the writers truly throw that idea at us? Maybe. Would it work? Definitely not. While it's odd that there are multiple versions of each model, a twin Cylon would be the lamest thing ever.
The last thing that BSG fanboys want is another Gollum-like story only to find out that there really are two Gollums.

Hmmm. On second thought, fanboys might like that.

Odds that I’m right:
662:1

The 5th Cylon is Lee Adama's Fancy Suit

In a universe where faster-than-light interstellar travel occurs daily, we can't rule out the possiblity that there may be a NanoTechnolgical Cylon... in the form a fancy mens suit. It would be almost undetectable and, as I’ll explain, could gain access to the highest echelon of government and military power.

Why it works:
Seeing as that Lee Adama is, at various points, a critical member of the Legislative, Executive and Military branches of the government, it only makes sense that the Fancy Suit NanoTechnology Cylon (FSNTC) would somehow find its way into Lee’s wardrobe. I’m sure FSNTC looked for others to adorn, but no one else, besides Lee, high up in the chain of command ever wears a fancy suit… Not Admiral Adama and certainly not Saul Tigh. The closest candidate was President Laura Roslin, but she’s a woman and as I said, the 5th Cylon is a Fancy Suit NanoTechnology Cylon, not a Fancy Ladies Power Suit NanoTechnology Cylon, so that could never work. It’s obvious that Lee Adama was the best choice for the FSNTC.

When Lee became the military advisor to President Roslin, the FSNTC was privileged to all kinds of unfettered military and political access. Later down the road, Lee becomes the Caprican delegate to the Quorum of 12, giving FSNTC even more access to the political world. And eventually, Lee finds himself as the interim President of the 12 colonies, giving FSNTC access to virtually everything. It couldn’t be more perfect!

Why it doesn’t work:
While some might think of a NanoTechnological Cylon in the form of a fancy mens suit is ingenious, they would be wrong. It’s just stupid. I’m a little disappointed in myself for even thinking up this possibility.

Odds that I’m right:
1201:1

The 5th Cylon is One-Leg Gaeta

There's a pretty popular theory going around out there that Felix Gaeta is the final Cylon model. Yes, the Gaeta that pretty much got his leg shot off and then sang like a song-bird freak in the recovery room of the hospital, annoying the piss out of everyone within two ships of the Colonial Fleet. Yes, the same Gaeta that has said the words, "dradis contact," more than anyone on the show.

Why it works:
This theory works for quite a few reasons. First, Gaeta is in a high enough position in the fleet to warrant the whole, "no way" factor. Secondly, he's been harmed physically (see Cylon Pirate Tigh), but not killed (Cylons, while seemingly perfect, are looking for human-like flaws). Third, he was integral to getting the fleet to the nebula. Fourth, like 3 of the 4 recently revealed Cylon models, he was a major part of the resistance on New Caprica. 

More importantly, as previously mentioned, he can sing. Like really good. Also, he has an ethnic look to him (he's really Canadian, though). Why is that important? It's apparent that the Cylons have an inert desire to be diverse (one asian-american, one african-american, one middle-eastern-american?, two oldies, some youngins, etc.). You can't really place the race card with they Cylons.

Why it doesn’t work:
Dude has curly hair, Cylons just THINK they want to be human. But once they encounter curly hair, they'll be just as pissed as every other girl out there -- they can't do a frakin' thing to it when it's humid.

He's a singer. No other Cylon has any extraordinary ability. Except, mind you, Samuel Anders, who was amazingly gifted at pyramid (which, by the way, now that he's been found out as a Cylon, the C-Bucs should probably have to forfeit any games and/or championships won with Anders on the team).

He has ONE LEG. I can't really see much high action happening with Gaeta hobbling all over the place. If Adama ever confronts him, one single judo sweep takes him right out of the equation. Plus, I've heard (not seen) rumors that everyone on the ship now calls him Hip-Hop-Gaeta-the-Playa. It's not catchy like Boomer, or Athena, so he can't possibly be a Cylon.

Odds that I’m right:
5:1 (this is a pretty realistic one)