Brahman is a god of the Hindu Trimurti (trinity of supreme divinity), often referred to as The Creator alongside Vishnu (the preserver) and Shiva (the destroyer)...
He is an early vedic god and it is said that he created himself in a golden egg called Hiranyagarbha - the creator of the universe and bringer of knowledge!
Brahman is a great addition to your altar to represent these things
Brahman doesn't carry any weapons, rather symbols of knowledge and creation, including copies of the Vedas, a string of Mala beads (a type of prayer beads), a sruva (a type of ladle used to pour offerings into sacred fires as sacrifices), and a Kamandalu water pot that represents the source of all life.
It is believed that the Four Vedas (the most ancient holy texts of Hinduism) each come from one of the heads.
This brass Brahman statue is created in the Thai style as he is very popular in Thailand.