Is there an MLG for grand theft auto 4 , and it's add on packs ?

No. GTA used to be on Gamebattles from 08' to mid 09', but the MLG staff took it down because people were always cheating, modding, or they would lag switch. These issues became so prevalent in almost every match that mlg staff just removed gta from it's ladders. There has been Various petitions to put gta back on the ladders but mlg staff doesn't want the headaches that gta had caused them once before.