I remember stealing stuff from the Kecleon Shops in the dungeons. Good times. I tried recruiting Kecleon several times in Blue Rescue Team, but it wasn't until about a year ago that I finally succeeded in adding a Kecleon to my team. I've leveled it up all the way to level 100 and I often use it on missions. I still need to recruit a Kecleon in Explorers of Time, Darkness, and Sky, however.