Space Runaway Ideon: Be Invoked (1982) on Netflix

For years, the crew of the Solo Ship has been at war, and on the run, from their enemies, the Buff Clan. The Solo Ship has a major weapon at their disposal: a mysterious, supernatural robot known as the Ideon. However, the Buff Clan is working on their latest weapon: the Ganda Rowa, a powerful warship that might be even more powerful than the Ideon. Meanwhile, Karala, a member of the Solo crew and a former member of the Buff Clan, discovers that she is pregnant. She believes that this child, a messiah, could put an end to the conflict between the two factions. But a side-effect is that this child makes the Ideon more powerful, and so the war tragically escalates until the only thing a war causes - doom, death and destruction - are manifested.