According to the documentation, Nuclear type Pokemon
are much more aggressive than normal Pokémon, and have been likened to mindless monsters that will attack anything in sight. You can catch them, but they disobey orders and may even attack their trainer
I got one Trawpint at the first Power Plant (Epsilon? Can't remember.)
How often those Nuclear Pokemon go rogue, disobey orders, and cause trouble?
Or is that text more a role-playing description? That is, the Pokemon won't actually cause any trouble at all?