Once upon a time, I was a lot younger.
My friends were on Scratch, and I felt I should be there as well.
One of my friends (my best friend at the time) was a great fan of the Rowlet evolution line (as was I), and his username was KingArcherOwl, with a fitting Decidueye as a profile picture.
He was tall, and I was much shorter. In a weird sort of way of making a reference, I decided I would use the username BestDartrix.
Unfortunately, I was very bad at googling Dartrix's actual name, and I misspelt the Pokémon as 'Datrix'.
It's stuck with me ever since.