It's magic; I don't gotta explain jack! Still, if you're person is...well, a person, it'll affect them about the same as anyone else, although it does draw upon natural urges gone haywire. Urges to acquire resources, status, selfishness, and so on. I leave it up to your robo-brain to twist that as you see fit.

As for your rat, let's see....The Beautiful One! An urge to pamper and preen will become nigh irresistible. For a robot he'd probably oil himself up and do a lot of self-maintenance to the exclusion of pretty much everything else.

That one's the most self-absorbed of the bunch, so if there's no other characters to get properly worried for his sake, another rat is ready and willing...