The laboratory used to be a terrifying place, rumors passed in whispers about the torture that happened behind the closed doors. With peculiar interest he managed to find its way there, where he found the purpose he spent his life searching for.
Ace's the front side of the coin, trapped in a precise balancing act between what his boss wants, and what his boss needs. And he couldn't be happier.
Ace, or The Argent Soaring Nebula Over Forty Nine Legions Unified For The Third Lord's Banner, alongside the scientist, are the quiet backbone of that team I sometimes occasionally mention, and you can see in the tags. The research department, the two of them work on things that the public doesn't really get to know.
The scientist was done first, with the clear idea that it would be the sort of person you genuinely wouldn't want to meet. The only thing it cares about is its research, and it only stays as part of that team because the leader lets it do that.
Ace was made to be the explicit perfect match for the scientist - friendly, outgoing, kind, character-wise everything it is not, but sharing the same deep passion for biology and being somehow even more stubborn about it at times.
[The name thing is also obvious - the scientist has no name, only titles; Ace's name is fourteen words that would make a rain world ancient BLUSH from their fanciness. "Ace" is just a convenient nickname because TASNO49---- didn't fit the system.]
And so he's working away, learning and studying, while also making sure the reputation of both laboratory and its boss is slowly restored. To a degree, at least. A labcoat to be more personable [and also because labcoats are cool], a smile, always some advice. Ace knows what he's doing!
And he is truly, genuinely, happy.
[by the way, they both are physiologists. Scientist also focuses in neurology, while Ace's side passion is a study I made up considering the world of pokemon - bioenergy, the effect of type energies on living things]