Mine started back before the internet became a thing and bbs's were still massively popular. Back then I was certainly a geek and RPG/Strategy game enthusiast, one of my favorite games back then was Battletech, and I designed so many different mechs that I literally had a binder full of them. When I got a computer that was capable and was getting bored with the small local systems I was using, I signed up for an account, but the name I was using for my nickname was taken, so I took the name of one of the battlemechs I designed, the Norsehawk.
Battletech geek stuff ahead be warned. Back then, the weight limit for LAM mechs was not clearly defined as being 55 tons, And I saw other LAM mechs like the wasp, stinger, and Phoenix Hawk all had LAM versions. There was also the Shadowhawk. Well, one of my favorite standard mech designs was the Warhammer (side note, another game I spent way too much money on). So I wanted a Warhammer that could fly. So I designed a super efficiently designed 70 ton monster of a mech, that had lightning cannons on its arms, short range missiles, and could transform into a jet or half jet half robot combination and smite people from the sky with lightning. The Norsehawk.
Other names I use for individual character names come from characters I played in Everquest back in the day too. Krogg Gnomestomper, Thorgryn, Zalan, Yuuichi Trapspringer, and Kenza just to name a few.