From Rangjung Yeshe Wiki - Dharma Dictionnary
Yamantaka (gshin rje gshed). A wrathful form of Manjushri, representing wisdom that subdues death. Among the Eight Sadhana Teachings he is the wrathful buddha of the Body Family known as Manjushri Body ('jam dpal sku). Yamantaka means 'Slayer of Yama' the Lord of Death.