Allen Walker is an amazing character. Even if sometimes he can act annoying that's all it is...an act. My view of Allen is that he is a lonely, sad boy who doesn't really know who he is anymore or what he's supposed to do. I think that even though Allen is usually always around his friends (Kanda, Lenalee, Lavi, etc.) he still feels alone. He always puts others before himself, even if means that he could possible die.