What happened to Cena's sidekick
 

B-Radd, or B-2 yes B-2 that was it. Whatever happened to B-2?

Basically, Rodney Mack (as Red Dogg) did a run in after one of his matches and proceeded to kick the shit out of him. Cena then turned on B2 and announced Red Dogg as his new homie. Rodney Mack is on Raw a short time later and B2 gets released.

i remember B2 being in the RR and getting tossed out within 10 seconds

B2 was better in Right to Censor.

was rodney mack also part of the mean street posse?

No, you're thinking of Rodney...

Or...ROD-RAGOUS!!!

Mean Street Posse had such an awesome entrance theme.

Bling Bling Buchanan

Buchanon is in All Japan right now.

Didn't he recently have a dark match before a Smackdown and it was god awful?

Yeah against the recently re-signed Henry Godwinn.

He's actually gotten much better from what i hear.

He did a number of indy shows in GA [where he lives] after leaving WWE, and then has been wrestling overseas in Japan pretty much full-time since he left there. He worked GA indy dates inbetween trips there.