Yup. That's Fire Emblem's Marth. Dancing to Kesha's Tik Tok.

And here's Marth and Roy, cutting a rug.

These clips, and more like them, were made by Shinju Kobayashi, using a program called MikuMikuDance, which is kinda like Source Filmmaker, only for funky moves.

[thanks Tiny Cartridge!]