Character from Re:Zero by Tappei Nagatsuki
An infinite swarm of self-replicating rabbits that devour everything organic — one of the Three Great Mabeasts and possibly the most horrifying.
The Great Rabbit is the most psychologically disturbing of Daphne's Three Great Mabeasts. It appears as cute, small rabbits — until they begin eating. The swarm self-replicates infinitely, and each rabbit has an insatiable hunger. They consumed Subaru alive in one of the series' most harrowing death scenes. Beatrice eventually used her yin magic to teleport the entire swarm into another dimension, which is the only known way to deal with a creature that can't be reduced in number through violence.
Appears as a swarm of small white rabbits that multiply endlessly. Each individual looks harmless. In numbers they become a consuming tide of fur and teeth that strips flesh from bone in seconds. Subaru was eaten alive by them in at least one timeline.
Also known as: Great Rabbit, The Great Rabbit, Oousagi