I came here kinda thinking it would be about Link (from the Legend of Zelda), but that obviously wouldn't make sense, being in a CS discussion section. Dunno what was I thinking. I'm just a hopeless Zelda nerd.
Anyway, yeah, just some unused sprites. On that note, has anyone used the sword-wielding frog-like dude in a mod? I always wanted to play a mod that featured some unused sprites, especially that guy.