A bit of a curveball, but here we have our only non-playable Earthmate, Ivan! Unless you count the protagonist's child outside of Rune Factory 2, which I don't.
The model may have difficulty generating Ivan's outfit, but adding the prompt layered clothes may help. Unfortunately, as he is an NPC from the very first game, Ivan has no alternative outfits.
Sidenote: The generator seems to think of Ivan as a woman, so adding the flat chest or male focus prompt with clothing prompts may be needed.