User blog comment:Ultrasonic9000/Name of Soul Surges?/@comment-4802891-20120131084727

I think they don't have name, unfortunately. They're secondary characters after all... and their voice clips are taken from other games, therefore they never say the name of their Soul Surges. Lamorak's is the same as Gawain's though.

Oh and, well, Sonic never say his either. And I think there's no hints of what it can be. It's just the regular "slash-everything-on-sight" Soul Surge.