I was at one point called LavaHalmar, however a bad experience with lava in Minecraft led to an aggressive name change in which FieryHalmar was chosen
Other names I've thought of.
"Timothy" as in a Paralell universe my main pokemon trainer is completely different then my usual Halmar
"NetherDoomHalmar" also in a parallel universe where my main Minecraft character is evil
and I think that since I'm Zygarde, ZYLAGARDE doesn't sound too bad, it has a nice ring to it, what do you think?