"A mascot is some thing, typically an animal or human character (but not always; for example, Stanford University's mascot is a color, and its band's mascot is a tree) used to represent a group with a common identity, such as a school, professional sports team, or corporation."--http://www.wordiq.com/definition/Mascot
They must have forgotten the part about how mascots have to be small and furry when they wrote that, huh? I think Alucard has a very good argument for being called a mascot, since a lot of people identify Hellsing with him.
But I want a Riiyooki/Ryoko hybrid. Arachnoidfreak can have the Riiyooki/Alucard one.