Vajrayogini (Skt. Vajrayoginī; Tib. རྡོ་རྗེ་རྣལ་འབྱོར་མ་, Wyl. rdo rje rnal 'byor ma) — a wisdom dakini. The practice of Vajrayogini is especially popular in the Anuttarayoga Tantra of the Kagyü, Sakya and Gelug schools and the most well known aspect of the deity is the one known as Kechari according to Naropa's system (Tib. ན་རོ་མཁའ་སྤྱོད་, Wyl. na ro mkha' spyod). Vajrayogini is usually depicted as red in colour with a semi-wrathful expression.