Dunsparce
Dunsparce dont have any Stun Aoe in TMLearnset, so add:
TM003 Water Pulse
TM071 Double Team
TM202 Fling
TM209 Dragon Lullaby
TM212 Quicksand
TM220 Sand Force
TM222 Imprison
TM223 Night Shade
Any of the stun options will help, even if only one is added.