what is the nicknames of tokio hotel members?

Bill: Macki (I think. From His grandma.)
Tom: Tomi (from Bill! XD)
Gustav: Wolfgang (boys tease him :( poor gusti)
Georg: Hagen, Hobbit ((LOLZ! I Любовь Hobbit. I Любовь Ты Geo)

tom kaulitz-tomi
bill kaulitz-billa
gustav s.-gusti
georg listing - georg (he has no nickname,name to simple)

Tom> Thomas! *bill says that
Georg> Moritz *his секунда name, или hobbit!

i think bill is macki
and tom tomi

Bill`s nickname : Macki ( from his grandma)

Tom`s nickname: Tommi xD <3

Gustav`s nickname: Gustii или babyface

Georg`s "nickname" : Georg или George :P

tom:tomi
bill:mackie
georg:hobbit
gustav:babyface