Tok Casper was the first known king of Maya city-state Quiriguá in what is now Guatemala. He ruled 426–?. Casper took the throne when he was only thirteen, but ruled for 50 years. K'inich Yax K'uk' Mo', king of Copán, installed Tok Casper upon the throne.
His successor was Tutuum Yohl K'inich.
References
Tok Casper Wikipedia(Text) CC BY-SA