He played guitar and he was Tech's best friend way back in the day. He got murdered.
If you're a cool kid and downloaded K.O.D., he gives the full story of his death in verse 3 of The Martini. Fucked up stuff.
HAHAHA SPACE KILLED ALL THREE OF THOSE NIGGAZ. REAL FUCKING TALK
SPACE - TURNING CHILDREN INTO ORPHANS
If you listen to K.O.D., listen to the last track. It's about him. I think it's called "The Martini."