As someone sorta said before (in my own words, I guess) they don't really show dead characters ...
That's a nice mistake Drugs guy in two different places at one time (Edit three from what Svip said who I haven't found yet), who's actual real character's name is Crack Addict
I'd think there would be better drugs than crack in the future. Geez.
Of course there would be, in the Futurama-verse the Human race is an intergalactic civilization. So there's gonna be intergalactic trade and intergalactic black-markets from aliens all across the universe. Well, the ones who like to trade with Humans anyway, most likely Doop members.
Transcripts of both the Futurama Madhouse and the Infosphere: His character name is "Crack Addict". And in various fan fictions, where he usually has a very short cameo. All of the ones I've read anyway that he appeared in, and the ones I've written/typed up.
Also ... look below.
So it seems it's the right name for him at this point in time, until we know his real name, if it is ever revealed.