Ok, so this is a discussion topic of the character most recognized for Desuspam, Suiseiseki from Rozen Maiden ~desu. Now, Suiseiseki is hilarious, she's a prankster and has fun playing gags, usually at Jun or Hinaichigo's expense lol ~desu.
Personally, I love Suiseiseki, she's hilarious and awesome ~desu. Plus, since I tend to spam Desu everywhere I am, she's a natural choice as a favorite character of mine ~desu.