He's a hunchback and he works in a church. Can you guess how he got his name? Quasi is a multi-powered Joker who can remember little of his past other than that he was some kind of explosives expert for the bomb squad. Post-Wild Card, he can self-teleport, see segments of the future, and possesses enhanced strength.
So what's the downside? Well, aside from a lame left leg, parts of his body and/or brain phase out of our dimension at random intervals leaving him a drooling idiot for unspecified amounts of time. Although quite intelligent, he can barely hold on to a thought for longer than 30 seconds. And he'll forget who you are while you're talking to him.
Positive qualities - Gentle soul, devoted to Father Squid.
Negative character traits - Forgetful, unreliable, vague, drools a lot.
Main appearances - Card Sharks, Black Trump.
Supporting appearances - Down and Dirty, Dead Man's Hand, Dealer's Choice.
In a nutshell - Not all there.
Random quote - 'I remember you, but I've forgotten where I am.'