In Ethirneechal, the mere utter of his name would bring ripples of laughter and that provoked him to change the name. Looks like the name can do wonders to Siva Karthikeyan and so possibly in his next movie "Maan Karate" his name is "Peter". In Madras Baashai, Peter is a guy who shows of too much without anything in the box, and that might have propelled!
In a rather sporty look, Siva will also brand a Spike haircut and his character is of a guy who is from the usual middle class, but tries hard to look stylish and shows off. So Peter is apt indeed, riding away in expensive bikes and luxurious clothes with nothing in the pocket, it should sure bring the smile! After doing a couple of village centric movies, this should be the change he wanted. The movie also has Hansika in the lead cast.