KENDRICK! DROP ANOTHER MENACE AU AND MY LIFE IS YOURS!
In no particular order, here is more Danny "The Menace" Fenton-Wayne Au due to popular demand.
Every single Wayne kid or Wayne Adjacent kid had to suffer through someone close to them having a thing for the eldest Wayne. All Robins at one point had to restrain themselves from blurting out their identities during downtime on missions because of the things their teammates had said about Danny in or out of costume. It was more bearable if the person had a crush on Phantom instead of Fenton-Wayne, but not by much. Danny is unaware of their struggles and actually didn't date much due to people not approaching him. They are intimidated by him.
Danny asked that Phantom not be overly associated with Batman, and his real ID is a well-kept secret. Even after the Bats revealed who they were, most of the heroes outside the seven main members of the Justice League don't know Danny's second ID. The hero community just actively thinks Bruce based Batman on Danny Fenton-Wayne because of his reputation, but he remains a civilian in their eyes.
Damian has tried to trap Danny in an arranged marriage multiple times. His reasoning at first was that Danny was a better fighter than him, so the only way to take over as Heir was if he controlled his marriage and put one of his people as his spouse. Then, it turned into him wanting to find Danny the perfect match. Duke helps him stream through potential sutors; it's how they bond.
Danny Fenton-Wayne has the uncanny ability to guess someone's worst fear. He doesn't pick out common fears like heights or the dark. He will, dead-stop stare at someone and whisper things like "Are you afraid that your mother secretly loves your sister more?". The public demanded Bruce test him for a meta gene, and when that came back negative, as well as him not being an alien, the public grew more afraid of him.
John Constantine once met Danny Fenton-Wayne at a tarot card market. He was so unnerved by the eldest Wayne child that he added Danny to the "Avoid at all costs" lists that he sends out monthly to Justice League members as part of a safety report against the dark arts. He was aware that Danny was Batman's "civilian" son when he added him to the list.
Phantom has been asked by multiple groups of different sides of the law- including Klarion the Witch Boy- to join them. He is known to work with the Justice League but operates as more of a consultant. People assume it's due to his nature, as he is hailed as an ancient, old being whose fancies change on a whim, as all ancient beings tend to do. Wonder Woman confused him for a god when she first met him.
Alfred once got a cease and desist letter from the local mall for attempting to buy a storefront as a gift for Danny. He wanted the boy to sell his dolls or have a craft store, but the mall freaked out when they found that Danny Fenton-Wayne was going to be the owner.
A rumor started around Gotham that Phantom lives, or at least is anchored in Arkham. He is often seen visting patients, and works to make their stays there an active recovery program instead of what traditionally happens in old asylums.. He also makes it really hard for people to break out of Arkham and often foils attempts.
Phantom once took on the mind-controlled Justice League seven alone. He won, and he still had time to stick around to help clean up after the fight. He's regarded as the strongest on Earth. However, this is a double-edged sword since challengers come from all corners of the universe to fight him, much like what happened to Superman.
Unknown to Bruce, Danny has slowly, over the years, built secret passageways inside the Wayne Manor walls and undergrown caves. He uses them to scare away as many suitors as possible from getting too close to Bruce. He also uses them to sneak around as Fenton-Wayne, commonly crawling out from under beds and out of closets, designed to not be noticed by metas, so everyone is freaking out that Fenton-Wayne is literally the monster under the bed or in the closet as a regular human. He's just like that.

















