^what about Mafty Navilles Erin? it's not a name for Char, and its not "Commander Gaylord", but it's basically the same idea.
I mean if you want a second name for a character, and it doesn't exist, people often just make it up.
Wakamoto is still the Emperor in the novels, but if that's all the production team had for whoever did the novel, they could have simply said "alright, I want a human name for this guy, and they don't have one for me, so I'll just create it."
