Season1, yeah - they're the "gang" of caretakers that stayed to help the patients of a nursing home? when the zombiecalopse (is that a word? I'm making it a word) happened. Who doesn't remember the granny breaking up the gun fight xD ?(ok, I like the Walking Dead)
5x09. You know what creeped me out? Not this, but the Governor illusion. As terrible as Gareth was, I don't think any TWD villain will carry such an evil aura as the Governor had. He genuinely scared me.