Ekajaṭa (Ekajata) is one of the warrior-followers of Skanda-Kārtikeya (Kartikeya). He assisted Kārtikeya while slaying Tārakāsura (Tarakasura).

Mahābhārata (Kinjawadekar)(9.45.58)
Mahābhārata Vols. 1-43 (Siddhāntabāgīśa)(9.42.52; see footnote, vol. 29, p. 476)