Mon chéri, your Yaya Tokaz avatar-
Spoiler: Forum Sized
Spoiler: Big
And just in case you prefer your murderers happy, a smiling version:
Spoiler: Happy Days Yaya
By the way, you weren't kidding when you said the character was obscure. Even searching in Japanese, I could only find a single other usable reference.
As always, tell me if you want anything at all changed, and I'll get right to it!