Ploegy
"The arcana is the means by which all is revealed"
Joker just pets her head and is like “Sorry Pikachu. I don’t think rodents can summon personas.” He knows. He has firsthand experience being turned into a rat/mousePikachu overhears Joker, stands up on her hind legs, and lets out a loud, "PIKACHU!" Then tilts her head in confusion when nothing happens!