A Pokémon Ultra Sun and Ultra Moon player has evolved from Litten into Incineroar before meeting their rival, Hau, and creates hilarious interactions with Hau, Mom, and others in the early portions of the game. The fact that the camera changes angles during the interactions to accommodate the hulking size of Incineroar demonstrates the level of detail in Pokémon games.
https://screenrant.com/pokemon-fan-evolve-starter-before-choosing-ultra-sun-ultra-moon/