Giles De Rais/Caster

During his introduction, Giles De Rais, the Caster seems to be a creepy but kind man, freeing a scared child that his master Ryunosuke Uryuu had sacrificed to him. Just when the boy's about to go free however, Caster reveals his real side, as the boy is ripped to pieces by one of his monsters, as a cruel Hope Spot.

Example of:
Bait-and-Switch Character Intro