When it comes to Japanese names they're not allowed! Wish these be....
"Naked Snake"
"Yoshitora Tokugawa"
"Kyōtarō Sugishita"
"Shitara"
"Kamado Ueshita"
At least these be made exceptions.
Names that need to be allowed
The name "Ashitaka" from Prince Mononoke isn't allowed.... :'(
Yeah, this was quite frustrating tbh. So much that some even had to use a "-" on the names of character roles.