That's not a really heroic thing to do... I don't believe Danny would do that. Villains, on the other hand... Kitty will possess Paulina during the water park ark and I'm certain there will be a scene with possessed Paulina
i wouldnt say highjacking a cute girl to check her out up close and personal is a villain thing, certainly scummy but not outright villainous. more like a horny teen with poor self control and a lapse of judgement, in the show he did possess people at least a handful of times iirc and most of the time it was for personal gain.
admittedly it is more along the lines of what you would expect from tucker, i mean he literally did exactly that when he had his ghost powers in this game, but im sayin i think its completely believable danny would too given the right circumstances.
like could be a similar situation like what happened with his parents, hes peeping on someone and he gets so focused on them he just kinda slips into their body like he did with his dad, at first he doesnt realize hes in them till he sees his reflection in a mirror and curiosity+horny teen take over. not the 'best' example but a believable one imo to explain how it could happen once or twice. another option would be maybe he accidentally slips into someones body again and nothing happens but he decides he needs to learn how to control his possession power so he stops accidentally entering people and asks sam to help him practice it, that way we get an excuse for an opportunity for possession fun without literally stealing someone body for it