Yudhishthira has been proposed as the last Alchon Hun ruler of Kashmir, according to a reconstruction made by Atreyi Biswas.
[1][2] The tentative identification has been made from the lists of Huna kings given in the Puranas and the Rajatarangini.
[1] The name of Yudhishthira I is mentioned twice in the first and third book of Rajatarangini, and Biswas assumes both to be the in reference to the same person.
[1] With the final reign of Yudhishthira and the end of Huna independent rule, new politics arose, such as the Turk Shahis in the areas of Kabul and Gandhara circa 666 CE.
[1] Alternatively, Joe Cribb proposes that Yudhishthira was actually the son of an earlier Alchon Hun king named Khingila, which would date him after the end of the 4th century CE.