Rei has a literally bottomless stomach. He doesn't just eat; he inhales food like a black hole, often causing a scene in local restaurants.
He isn't exactly a conversationalist. His vocabulary consists almost entirely of food names and grunts. Plot Highlights 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: Rei has a literally bottomless stomach
If you thought Ataru and Lum’s relationship couldn’t get any more chaotic, think again. Just as things were settling into a "normal" rhythm of electrocutions and failed dates, the ultimate ex-boyfriend crashes onto the scene: , the handsome Oni shapechanger. Who is Rei? His vocabulary consists almost entirely of food names
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.