JENNY:

BUBONIC VERMIN

The card what started it all.  Yes, I am a plague-infested rodent, funny you should ask.

STUPID MECHA:

STEEL OGRE GROTTO #2

What can be said, really?  He's a mecha.  He's stupid.

LARGE BLUE POLKA-DOTTED AMOEBA:

AMEBA

This one was fairly self-evident, really.

SMALL PURPLE PARAMECIUM:

SNATCH STEAL

The Amoeba's partner in crime, said crime usually consisting of stealing the mecha's wallet.  

CHRIS:

MYSTERIOUS PUPPETEER

Chris likes to talk through various puppets a lot (SPP, the piranha, multiple waiters named Dan...), plus can be mysterious when he so chooses.

TOM:

EARTHSHAKER

Someday Tom is going to destroy the earth with one of his ZERT!astic machinations.  Just you watch.

ANDREW:

INSECT BARRIER

That's one way to stop those inexorably advancing butterflies, eh, Andwoo?

BECKY:

PENGUIN KNIGHT

Becky is the resident Controller Of Penguins Who Like To Steal Wallets.  Especially wallets the protists haven't gotten to yet.

VICTOR:

BITE SHOES

He WILL devour your toes if you don't watch out.  Seriously.

EVILCHRIS:

FLAME CHAMPION

He's like Chris... only... eeeevil.  And annoyingly resistant to flame, apparently.  Just wait till I catch you with that shield down, mister...

MR. SOCK-ZOMBIE:

DARK ASSAILANT

The only zombie card that the mecha happened to have lying around.  Mr. Sock-Zombie is, of course, far cuter than this.

LUKIN'S:

OOKAZI

Lukin's is the place where most of us usually hang out in-MUX.  We tend to nuke/burn/destroy it five or six times per day.

WOLVERINES:

FLOWER WOLF

Wolvies are more properly a Jihad thing, but they make frequent appearances in Social also.  And they're CUTE.

THE EVIL PIRANHA:

METAL FISH

The Evil Piranha, like most flesh-eating fishies, likes to eat people.  Repeatedly.  Any chance he can get.  He lives in...

THE EVIL TOILET:

DARK HOLE

The Evil Toilet is where you go if your actions warrant it.  Once there, you can't get out unless Chris feels like letting you out.

TAMA-CHAN:

GIANT TURTLE WHO FEEDS ON FLAMES

Tama-chan is a cute little turtle from the anime Love Hina who also lives in SocialMUX.

SETTING VISUAL:

LIGHT OF INTERVENTION

When things are set visual, ANYONE can look at all the coding that goes into them.  Even those who will then go use the knowledge for evil.

HELPFILES:

SOLOMON'S LAWBOOK

I dunno, this one was the mecha's idea.  Ask him.

COLT:

ONI TANK T-34

This is a tank that is possessed by an evil demon and THAT YOU CANNOT GET RID OF.  Sums up Colt pretty well.

The end.  Go home.