Micheal Afton, the Night guard at Freddy Fazbear's.  Often goes by 'Mike'.  Is incredibly cocky at first. But overprotective of friends once you know him. Had a shitty family. Is lonely. Cusses sometimes. Flirtatious to girls. Probably needs a girlfriend or partner.

Family:
William Afton: Not the best father, his only enemy, really.
Elizabeth Afton:  Deceased 
Evan Afton: His little brother that he accidently killed by putting his head into Freddy Fazbear's mouth (I'm sure you know the rest)