3 : The Coming Of Rei, The Handsome Shapechange... May 2026

When Rei gets emotional (usually because he's hungry or seeing Lum), he transforms into a giant, tiger-striped "cow-monster" (ushitora).

In this episode, happens upon the "tiger-cow" in town and, finding it strangely cute, brings it home—only for it to transform into the stunningly handsome Rei. Lum is immediately dismayed, as she dumped Rei for his obsession with food over her. 3 : The Coming of Rei, the Handsome Shapechange...

Rei is Lum’s former fiancé, and at first glance, he’s everything Ataru isn't: tall, incredibly handsome, and quiet. However, the "handsome" part comes with a few major catches: When Rei gets emotional (usually because he's hungry

Rei’s introduction adds a new layer to the series’ dynamics. He serves as a foil to Ataru; while Ataru is "ugly" on the inside but human, Rei is "beautiful" on the outside but literal monster on the inside. Plus, his arrival marks the beginning of the "exes and rivals" trope that defines much of the series' comedy. Urusei Yatsura - Prime Video Rei is Lum’s former fiancé, and at first