(Please note this is going by danbooru translation, would be awesome to have someone help with translating stuff properly but I am quite sure this is inaccurate at points because even i have noticed some inaccuracies before LOL )
Garchomp: Hey losers, let’s have a snowball fight!
Charizard: Let’s do it!
Charizard: Who did this?! Who put a rock inside this snowball?!
Garchomp: Eh..he..he…who knows?
Gabite: Who did this? Who put their Ice hidden power inside this snowball?!
Jolteon: Confess already!
Hypno: Hey, let’s take this guy to a Pokemon Center quick!