I think I might have encountered a shiny Sceptile in the Battle Factory once. I hardly remember though and I really didn't make a big deal over it.
3DS Friend Code
Fire with Magmar, Slugma, and Braixen. Please PM if you want to add me.
Crobat, Golem, Magnezone, Butterfree, Spheal, Luvdisc, Charizard, Xatu, Sableye,
Shinies obtained from GTS/Trades
Parasect, Glameow, Chansey, Deoxys, Lugia, Machamp, Linoone, Spiritomb,
Skuntank, Foongus, Aron