My friend and I are in university and we are allowed to have one Pokémon with us depending on class size. Well my friends dunsparce keeps trying to tackle my mimikyu… but as a normal type move against a ghost it has no effect… but he just keeps on attacking her… with nothing happening…why does my friends dunsparce keep doing this?

Dunsparce are normally cave-dwelling pokémon, and as such, their eyesight is not typically exceptional, while their other senses are. It’s likely that your friend’s dunsparce is mistaking your mimikyu for an actual pikachu, but because she likely doesn’t smell like one, she’s likely confusing and thus scaring your friend’s dunsparce. If this is indeed the case, your friend may wish to sit down with their dunsparce and try their best to teach him what a mimikyu is and how yours isn’t a threat to him.