Red vs. Blue: Simmons has a supply of food stored in his attic in case of zombies, he won't tell Grif what he'll do after the food runs out in case Grif becomes a zombie. Grif's plan is run to Alaska in the hope that any pursuing zombies freeze to death. Sarge however has thirty-seven zombie plans. 36 include using Grif to distract zombies. For the 37th plan he willingly becomes a zombie just to kill and eat Grif.
Tex shows herself to be this in Episode 18 and 19 of Revelations.