大方廣圓覺修多羅了義經略疏 2.1424

2.1424

亦云鳩槃茶，食人精血，其疾如風，變化稍多。住於林野，管諸鬼眾，故號為王，來至道場而為上首。

Also called Kumbhāṇḍa. They consume human essence and blood, and are as swift as the wind, with rather numerous transformations. Dwelling in forests and wilds, they govern all ghost retinues and are thus called kings. He came to the bodhimaṇḍa as the leader.