Devi Bagala would be the deity of Bagalamukhi Mantra. She is also called 'Valgamukhi'. 'Bagala' or 'Vagla' actually means a 'rope' or a 'bridle' – that may be set while in the mouth to control the movements of tongue - and 'mukhi' suggests 'confronted'. She could be the Tremendous power https://www.youtube.com/watch?v=CQDKEh9UjJA