After Optimus Prime was sacrificed in the G1 movie, he came to Cybertron in parallel time and space with broken memories. He only remembered that he was Orion Pax. What would happen to him and D-16 (Young Megatron) in Iron Castle (Pugao)? If you don't like it, can you spray it lightly? It's just my imagination.
Purpose: Personal struggle in the great era