Strikingwolf because he was bribed. Qazplm601 because he said he had grown attached to it. ThomazM because he always has an anime avatar anyways. GideonSeymour because I think he's tired of his old one. Kill-Joy because cute things. Lumaceon because the same reason as Kill-Joy. Those're my votes. Though changing the avatar into different anime characters still counts as "keeping them" in my book.