The name "Heruka" is made up of the prefix "he-" meaning "hey!" and "ruka", a rich term implying many levels of subtle meaning - richness, royalty, etc are implied by "ruka". It is linked to the Sanskrit word "Rc" which is where the name "Rgveda" comes from. The famous bodhisattva of the second chapter of the Mahayanasutra "Sovereign King of Golden Splendour" (suvarnabhasottamendraraja) is called "Ruciraketu" - "He Who Flys the Banner of Riches (ruchira)" - is a lay emanation of a Heruka.