No one took any lethal damage, so patching them up is easy.
(4)(4)(1)(2)(5)(2) (4)(4)(3)
In a flash of insight, you roll the cold steel of the Beldum Egg on Kecleon's bruises. It soothes a bit of the pain. You also bandage the wound where barbs pierced Kecleon's wrist. Whenever you do something that hurts, Kecleon turns invisible.
Caesar is leaking a little poison where he was Sucker Punched, so the best thing you can do for him is staunch those weeping bruises. After managing that, Kecleon decides to follow you around for the day and see what it's like being on an adventure with Heart. If he enjoys it, he'll join your party in a Pokeball. For now, he doesn't count against your six Pokemon.
Here are his stats:
7 base HP
Color Change
Thief, Bind, Feint, Feint Attack, Ancient Power, Camoflauge, Sucker Punch, Synchronoise.
(How much HP Heart and Caesar gain in this battle @Iron?)
Kogeki currently ability to active in battles: Anticipation.