The Mahā Niddesa (pp.89, 92), in its explanation of vatasuddhikā, mentions, among others, Puṇṇabhaddavatikā, Vāsudevavatikā, Baladevavatikā, and Maṇibhaddavatikā. Puṇṇabhadda is, therefore, probably the name of a yakkha like Vāsudeva and Baladeva.
The N.P.D., s.v. Puṇṇa, suggests that Puṇṇabhadda was the father of the yakkha Harikesa. The Mahābhārata (i.35, 1557) gives Pūrnabhadra as the name of a serpent.