Donovan in “Unfinished Business”

[Donovan has just caught Stiles as he desperately tried to climb up a scaffolding to get away from him. He grabs Stiles by the ankle just as his wendigo eyes and fangs come out, revealing that he is a lamprey/wendigo chimera]

Donovan

Don't worry, Stiles. I'm not gonna kill you. [He adopts his wendigo voice] I'm just gonna eat your legs!

[Stiles frantically tries to figure out a way to incapacitate him long enough to get away and ends up pulling the pin to the top shelf of the scaffolding. This causes a bunch of scrap metal to fall onto Donovan, one piece of which impales him in the chest and kills him]