Thai fighter’s nicknames

i was just wondering, how common were made up nicknames like Rodtang, superlek etc. in the golden era or generally in the history of this sport?

is it a new phenomenon resembling Western nicknames like The Rock, Madonna, Bono or whoever or was it always common in the community?

When are the nicknames being given and from whom? What name do they have in their ID?

is the nickname legally protected by copyright?