Welp, this is great. Your partner Treecko had a lot of food, now he's stuck in a corridor while you're both in a a dungeon. He's bigger than the whole passage! Treecko: Urrk... come on...! You: I told you not to eat every apple and berry we bump into... Treecko: Just hold on, I'm almost... there...! You: Huff, I'll go get a return orb to get us out of here, but you owe me. You leave to find Kecleon's shop. Treecko: Huff... well, at least I'm full... Much Later... You and Treecko are now assigned missions and dungeons that don't involve tight spaces. As ridiculous as it sounds, Treecko being bigger than the average starter level and even some evolved pokemon has it perks, not to mention how tanky and heavy he is. (Once again, feel free to set your pokemon species before starting).