So far, he's only in the Overcome Chihoko comic, but he might show up in the Mafia AU series later on.
Chris is a rather flamboyant and sexual Swiss master of seduction who doesn't mind flirting with his former idol and opponent Victor.
He's voiced by Chris Sabat in the English dub, but a flamboyant, deep-voiced German accent is enough.
(For further reference, I suggest listening to German Sparkle Party if you can't find any clips of Chris on YouTube. The voices sound so eerily similar and it might help you get into the mood)