Berserker (Sensha Otoko) (Fate)

Fate/Zero's Berserker (Fate/Zero) as depicted in the Sensha Otoko April Fools joke for 2009. In this universe, he goes by the online username "U to O", and is a helmet-wearing man who fears facial exposure and eye-contact. He uses his sketchbook to write his speech and thoughts, and is actually a nice guy.