Agni dev is the god of fire. Agni is closely associated with Indra and sometimes said to be his twin brother. He was born like Indra, in full of power and vigor. Dyaus pita and prithvi are named his parents but according to some kasyapa and aditi are his parents. Some believe that Agni originated from lotus which is created by brahma.
The Vedic scriptures describes that Agni dev has two faces, seven tongues and golden teeth. He is red in color. He is red in color, with black eyes, black hair. He has seven arms and three legs and seven rays of light emanate from his body. He was shown in images that riding on a chariot which is being pulled by goats or parrots.
Agni loves all his worshipers equally. He is the messenger of the gods and the acceptor of sacrifice as well. He is the mediator between the gods and mankind. When people use fire, they must face it toward the proper direction for different uses. Fire always asks for some sacrifice so he is prayed and offered goodies before starting any auspicious work.
In later times, Agni dev worship fell off dramatically. He became an incarnation of shiva and brahma. Eventually he has come only to be called on by lovers, and by men who wish to increase their virility.