This name is mentioned by Hairycless when you ask him about language. This name is anagram and allusion to Tarzan .
Whole credit to this finding to TibiaSecrets, mentioned in their Explorer’s Diary I ( https://tibiasecrets.com/explorers-diary-episode-1/ ) copied and pasted below:
Tarzan in Tibia?
After a very long talk with Hairycles, quite talkative ape NPC, we have tried to ask him about “language”. It’s interesting – how can ape talk? How did he learn the human language? The answer is surprising, it seems that it was Zantar who just showed up in Banuta, brought some bananas and thought Hairycles the language. It’s quite obvious that Zantar is an anagram to Tarzan! It makes perfect sense. Interesting fact: there is no info about Zantar/Tarzan on any of Tibian fansites/wikis.