Psycho Armor Govarian (1983)

The Garadain Empire invades planet Earth to drain it of its resources after draining their own planet dry. Zeku Alba, a Garadain scientist, decides to rebel against them and escapes to Earth, where he gathers a group of young children who can do psychogenesis, the ability to form solid objects from psychic energy. The most gifted of them is Isamu Napoto, a young orphan whose family was killed in the first attack of the Garadain Empire. To battle the Garadain Isamu is able to create Govarian, a robot which can regenerate through psychic energy. With the help of his fellow psychogenesis users, Isamu fights to protect the Earth from the Garadain Empire.

Source: www.anisearch.com/anime/3672