does microsoft or sony have a "mario killer" in the works?

[Gearbox]

I was just wondering if anyone knew of some games that sony and / or microsoft were working on that would compete with mario. and now, i no a bunch of you would say lbp but there is no face behind lbp, no lovable character, so it wouldnt rival mario effectivly (ex. sonic had a face) 

any? 

 

 

edit - by killer i mean a frase used to say something they want to rival it.