99 Most Intimidating Bosses In Video Games

16. Sinistar- Sinistar

Sinistar is the main boss of the game and he does not appear at the start of the game, rather he is under construction by enemy ships. Sinister is animated spacecraft represented with a demonic skull face. His loyal minions try to steal crystals from the player in which they use to build sinister. His attacks are basically eating the player. Yes, seriously!