If you're looking for manga similar to Chou Denei-ban SD Gundam Sangokuden Brave Battle Warriors, you might like these titles.
On a primitive planet with fauna similar to Terran dinosaurs and Ice Age critters, one of the angolmois energy capsules spread by the explosion of the Nemesis has affected the locals. A gang of evil dinosaurs have been transformed into Destrons, and a battered Lioconvoy is too injured to stop them. So he transfers his energy into a mammoth named Big, charging him with continuing the good fight.
All across the universe, the forces of the Maximals and Predacons are at war... and the Maximals are on the losing end! At the central headquarters of their army, a Convoy receives report after disastrous report from the battlefield, and thinks of the small team of warriors led by Lio Convoy, fighting to keep the Angolmois energy of the planet Gaea out of the hands of Galvatron...
The Autobots and Decepticons have been locked in a brutal civil war for eons, and now their battle has come to Earth! The Autobots seek peace and coexistence, while the Decepticons seek power and control. Earth and its populace are caught between the two as these mighty factions go head-to-head. Transformers took the world by storm shortly after their debut, and these previously uncollected stories were a vital part of that takeover!
A retelling of Mazinger Z mixed with ancient Greek mythology with a modern touch.