Chat Noir changes name to Catalyst eventually
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League of the Inter-Dimensionals: The Defeat of Monarch by Lady Phantom (RJs_Fanfics)
Fandoms: Danny Phantom, Miraculous Ladybug
23 Oct 2025
Tags
Summary
Sent on a mission by the Ancient of Time, Danny Phantom has arrived at the Dimension of the Miraculous, where he sets out to recruit the hero Chat Noir to join the League of Inter-Dimensionals.
Chat Noir has felt replaced by the sheer amount of new heroes Ladybug has joined to fight Monarch. After encountering the odd being introduced as Phantom, he’s asked to join his team and recruit new heroes.
Agreeing to join his league, Chat Noir—now known as Catalyst—and Phantom have teamed up to defeat Monarch before they set out to recruit the rest of the heroes—but Monarch has caught wind of Phantom’s presence and is fascinated by the ghostly hero, now making it his goal to capture him and figure out how the boy’s managed to cheat death.
Now Catalyst and Phantom must find out the villain’s identity while keeping Monarch at an arms length from Phantom himself, a difficulty as the butterfly sends akumas after them.
Along with that, Adrien Agreste has found himself enamored with the American-Exchange student, Danny Fenton, who can’t help but find trouble at every few feet he walks.In fact, Adrien is just as enamored with Danny as Phantom has become with Catalyst.
Series
- Part 1 of League of the Inter-Dimensionals