First Appearance: Micronauts #1 (January 1979)
Abilities: Bug can cling to walls and surfaces. He has amazing agility and enhanced senses. He's also a master thief and accomplished warrior.
Chances he's in the movie: 25%
Lowdown: Originally part of Marvel's Micronauts series in the early 80's, Bug found his way back into the current Marvel Universe in the precursor mini-series to the most recent Guardians of the Galaxy comic. Star-Lord discovered Bug in Kree custody and recruited him to assist the Guardians in their campaigns. He became a member of the group during the middle of this incarnation, but it's unclear if Marvel would include him a movie.  The character "should" be owned by Marvel, but it's possible that whoever now owns the rights to the Micronauts toy line could claim some legal rights to the character.  That may just be a can of worms Marvel doesn't want to deal with if they don't have to.