One of the bananas from Tropius. I like cherries better, but the cherry on cherubi has a face, so I worry that I'm hurting it by pulling it off. The Pokedex entries mention cherubi also running away to flee bird pokemon that try to eat it's berries, so it doesn't seem happy to be picked. No issues are mentioned harvesting bananas from Tropius, and it doesn't even really need the bananas, they just started growing out of Tropius because it was eating so much fruit. So it probably will be okay without it.
Use regular Alakazam or it's mega?