Haha, it's not that I made a mistake. It's that I consciously chose to pick a better name that resembled the original. Additionally, the katakana spellings for some things in this manga seem to be close but slightly off, or slightly different. So yeah, Asher is probably correct and instead of "Lyotal" "Leotard".
https://ja.m.wikipedia.org/wiki/%E3%82%B8%E3%83%A3%E3%83%B3%EF%BC%9D%E3%83%95%E3%83%A9%E3%83%B3%E3%82%BD%E3%83%AF%E3%83%BB%E3%83%AA%E3%82%AA%E3%82%BF%E3%83%BC%E3%83%AB