Noirebug and a new superhero by the name of Paon (actually Nathanial)
His skin was dark blue, his hair was light blue, he wore a long sleeved dark blue fluffy jacket (with light blue fur around the collar, at the end of the shirt and around the ends of the sleeves), a light blue ribbon around the waist, the weapon (which was light blue with green feathers) on the back making the tail, dark blue pants with light blue fur on the ends of the pants and black/blue boots/gloves
was dealing with the escaped zoo animals when Paon called for a "Bring my creation to life!" And created a sentimonster that looked and smelled like a walking steak to lure the remaining animals (black panthers) back into their cages but seeing the peacock being used by the heroes, Hawkmoth begins to suspect that Adrien is somehow related to all this hero stuff. Afterwords when Adrien returns the peacock miraculous to Master Fu (after de-transforming) who was trying to figure out the recipe for power ups. He was specifically stuck on tears of joy which got Adrien suggest crying laughing which Master Fu did and that created the power ups and gives them to Adrien.
Later while at home Adrien sees water flooding and sensing that an Akuma is afoot transforms into a water powered up Noirebug, Aquatic Catbug
Her entire outfit now had fish scales on it/them and she had green and red with black spots flippers
Aquatic Catbug quickly finds the Akuma, a person calling themselves Syren. Who then swims at Aquatic Catbug who calls for a "Lucky Charm!" Only for it to produce a floorless cage that Syren gets trapped in (as it now resides at where the street is on the street), which allows Aquatic Catbug to easily get to the Akuma object and "Cataclysm!" it.