The more I think about the Mineral Squad, the more I firmly believe Steven is the ‘baby brother’ of the trio.
I mean, he’s really easy to entertain, and the other two are fiercely protective of him.
I can imagine the three going for a cave trip and running into a Dragon-type pokemon.
Cue Cynthia and Riley going ‘PROTECT THE BBY’ and the wild pokemon gets REKT in seconds.