It's Charlie Horse in the english version, I forget what it was for the japanese version. Her first skill description says Kramps, however.
Huh, you're right, there are two different names being used in the localization. Seems like it's just a mistake. I'll tag him with both tags for now, but hopefully her upcoming 5* will resolve this.
EDIT: And it seems like they're sticking with Charley Horse. A shame, I actually liked Kramps. Oh well.
Wow, just noticed that Sevilbarra's sitting with the Lumiel Knights, and his recent event has them involved in his past. That's pretty cool! Makes me wonder how long they've been planning this stuff out.