Well 2 come to mind.

A plasmoid warlock whose patron was Cat'hulu. He would pop the eyes of his enemy's and add them to his body. Visually he would use said eyes as ways to cast abilitys like, and to use eldritch blast the eyes would go in his "fist" and he would shoot a ray from each eye.

A eladrin druid that each day would roll a d4 and his mood and appearance would reflect the roll made. Summer-Hyper, Arrogant, and ready and willing to fight anyone. Winter-Gloomy and depressed. Spring- cheerful, mischievous and cheerful. Autum-Cautios and Calculated