Um, no. Mugging them gets you Moon Stones (you know, those things you use to make Jigglypuff and Clefairy evolve?Originally Posted by Flare_Cross
...Um, I mean, those things used to make Irvine's Exeter...). You have to defeat them without mugging them to get Energy Crystals. And he is asking at a point in the game where he does not yet have access to Elnoyles.