actually hold on I hadnt really fully thought it out just had like a vague idea, this is my complicated answer for like what i was vaguely picturing
so basically wilbur comes in last and is the youngest of them all, and phil and technoblade are physically immortal regardless of where they are because of the type of creature they are, but tommy is a werewolf and he physically ages in the human world,
however going back to the fae world resets his age to his mental image of himself, because nobody can die of old age in the fae world.
technoblade and philza always look like how they mentally picture themselves because they don't change with age in the human world. but if something changed their mental picture of themselves, going to the fae world would change their physical appearance too
I was thinking its impossible to tell whos the oldest really, because physical looks are linked to mental images of ones self and none of them count years, let alone that in the fae world time is wonky and can go slow or super fast randomly in comparison to the human world and its calendar
so baisically because they go back and for from the fae world and human world randomly when they don't know eachother, one would expereince more time in the fae world then the person in the human world, or vise versa if the fae world is going slower then the human world
also because magical creatures in this au all originate and come from the fae world, I was picturing that they all were around for super long in the fae world individually before they knew each-other, and then moved to the human world at different time periods?
so like philza moved to the human world first to see what was up, in the early human days, and then turned a human wilbur, and then went back into the fae world to show it to him for a long time before they come back out,
then technoblade goes to the human world next, around whenever he heard humans were making jewelry with gems and cool shit with gold, and he wanders around in different human country's and cultures for a very long time
tommy goes to the human world next, but because he's a werewolf, he ages and does occasionally pop back into the fae world for a bit on full moons and then come back
they all meet when Wilbur starts up a band in the 80s and tommy and technoblade try out for positions and immediately ping vaguely as supernatural creatures to Wilbur, and therefore theyre immediately hired.
(technoblade on bass, philza on electric guitar when the song calls for one but mostly band manager, Wilbur is lead vocalist and acoustic guitar, and tommy is drums)
the band is dies out when they fake their death a couple years later, but they obviously stay close together, of course believing themselves to all be the same type of creature, eventually moving into a big mansion they purchase with residuals from the band and philza's old vampire wealth.
technoblade finds out theyre vampires the first mourning after the night they all movie in, because he was awake at the same time as wilbur and philza, who coincidentally drank blood that mourning in order to stay energized to finish unpacking all their furniture and stuff into the mansion after theyd finished dragging it all in during the night, (the regular time they are awake,)
but tommy went to sleep when it started turning morning, unlike techno who was staying up later then normal to help out wilbur and phil, who had insisted they would be staying up until they finished
he literally stands in shock that he hadnt figured out they werent other dragons sooner, realizes that he'd seen tommy in sunlight before and that tommy must not be a vampire like these two, and then he just goes to bed.
it takes him 2 months of tommy going back to the fae world on the full moon for him to realize tommy is a werewolf.
after that its a couple years more of technoblade laughing and internally giggling to himself whenever wilbur, phil, and tommy all very visibly and blatantly act like what they are in front of the others without each other realizing, only for them all to brush said behavior off.
also yess he so does feel very bad that tommy got a burn because he hadnt had the foresight to just make up that tommy had a silver allergy to wilbur or phil
also eventually wilbur and phil and tommy definitely realize that techno knew the whole time, because technoblade was like the only one who would outright lie to keep the cover.
also technoblade fully hired another magic user to carve out like a cave/forge underneath the mansion in secret to keep his hoard in during the time they didnt know he was a dragon, and when he shows them they flip out
