T-Dog built himself a cult following during his run on the show, though he didn't feature for long before his death in the prison. He didn't even do that much, or say many things of any great relevance... Hmm. He just existed, and gave his life up to allow Carol safe passage. Any character named T-Dog was going to garner some affection, and the meme creators of this world set about their business during his run on the show. He wasn't a comic book character, nor was he really a necessary figure in the TV show, but hey, he had a cool name. Farewell T-Dog, you uncrackable enigma.