The anime where the male lead transmigrated had a lion mythical beast called " The Legend of the Sealed Hero." It was a fantasy adventure cartoon that aired in Japan in 2012 and was produced by the animation company JCSTAFF. The cartoon told the story of a hero who sealed a hero. He traveled to a different world and met a variety of fantasy creatures, and he started a thrilling journey with them.
I don't know of any anime where the male lead wears a golden lion armor. Could you be referring to a particular work or character that could provide more information?
The old lion story has the old lion as the key character. This lion, which is past its prime, is looking for ways to get food easily. There are also some other animal characters. For example, there may be a clever fox who is the first to suspect the old lion's motives. There could be a strong - willed buffalo that doesn't fall for the old lion's tricks so easily. And there are often some smaller and more gullible animals like the rabbit or the squirrel that the old lion tries to take advantage of.
The main characters include Simba, a young lion who is the protagonist. Mufasa, Simba's father, a wise and noble king. Scar, Mufasa's jealous brother who is the villain. Nala, Simba's childhood friend and later his mate. Timon and Pumbaa, the comical meerkat and warthog duo who befriend Simba during his exile.
Most likely, there is the good lion itself. There may also be other animals like zebras, antelopes, or other lions. The other animals could be either friends or foes of the good lion depending on how the story unfolds.
The main characters are obviously the man and the lion. The man represents humanity, with all its wits, weaknesses, and desires. The lion stands for the power and wildness of nature.