Name: Calamity (Shadow/Blu)
Home: [UNKNOWN] -possibly Earth before the mutation-
Age: 25 (Shadow)/13 (Blu)
Species: Wolf/Wolf
Abilities: Super Strength
Personality: Chaotic/Vengeful (Mutation) - Peaceful/Happy (Shadow/Blu)
Likes: killing, sabotaging worlds, and mutating others (Mutation) - making friends, being helpful, having time with others (Shadow/Blu).
Dislikes: being friendly, others being friendly to them, and having too easy of a battle (Mutation) - Being rude, others being rude to them, and others pretending like they aren't around (Shadow/Blu).
Background Information: after a mutation caused the siblings' bodies to fuse, they begun fighting the mutation mentally and the mutation would cause them to go on rampages. To protect them and others, they were banished to the Memory World, where they would eventually meet Luna, who is always trying her best to help them, but the mutation (Calamity) keeps interfering.