Donatello
Rafael
Leonardo
Michael Angelo 
Jk,
Aldo
Nick Diaz
Anderson
Lesnar
JDS - Paladin (Tank)
Mark Hunt - Paladin (Tank)
Chael Sonnen - Bard (Musical shit talk)
Anderson Silva - Samurai (Damage Dealer)
I would be the white mage cheering them on in the background and hitting the opponents while down. Lol 
Pride Wand. I would stand back and let him chainsaw through everyone.
Josh Barnett
Mark Hunt
Wanderlei Silva
Jose Aldo
JDS
Aldo
Nick Diaz
Nate Diaz
Chute box Wandy
Pride Cro Cop
Anytime Josh Barnet
King of Pancreas Bas Rutten
Murderers row.
Prime Shogun
Prime Crocop
Prime Wanderlei
Prime Fedor
Head kicks and soccer kicks galore!
4 prime Fedors
Don Frye
Bas Reutten
Vanderlei
Tank
Caol Uno
Roxy Modafferi
drug addicted rock bottom Karo Paryisian
that little Russian kid in the white t-shirt that Datsik fought
nobody would fuck with such an odd looking crew
Kongo (nut shots), Koscheck (eye pokes), Daley (cheap shots), PRIDE Shogun (soccer kicks). Dangerous combination.
1996 Tank Abbot
Juiced to the gills Vitor Belfort
Dan Henderson
Robbie Lawler
Lee Murray
Paul Daley
Ubereem
Hong man choi
powerbombu - prime datsik- Punches people in the balls in the cage. I want this man on my street team. Never know what he will do. Might punch someone from the same team but you have to have him
Joe son- Will actually kill someone
Overeem- Intimidation and killer knees.
Brock Lesnar- will smash all the retards into the pavement. Then point to the opponent and mock them, probably call them strawberries.
Honorable mention- Fedor
Despite the real possibility that Datsik might injure someone from his own Street Team or himself, he'd be a great addition.
People on the streets that have been around recognize batshit crazy when they see it and try to stay away from it. This would be a card well played.
Tank, Melvin Manhoef, Lombard, Fedor
Roy Nelson
Mark hunt
JDS
Cabbage Correira
Stipe
JDS
Cain
Bones
Who'd win in a street fight, prime Tank vs Brock?
Cain
TRT Vitor
Chuck
And of course Wand.