...all of them except Durant with Truant. I mean, srsly. At least it makes sense on Slaking (balance and realism). Apparently, the only viable strategy I'm seeing for it is using Entrainment to render the foe's Ability as Truant, though it seems too bothersome to attempt. :x I mean, it couldn't have Flash Fire instead? Intimidate? SOMETHING besides Truant, Prankster, Run Away, and Klutz.
I think Durant getting Truant is a pun on the fact that people used to say to lazy people that they should learn from the ever-vigilant ants, or something, hence making that point moot.
Also Prankster is a useful ability when you're having fun t-waving everything faster than you :x