I, Doomsday, Have Spent 100,000 Years in the Core of the Sun

Lu Yuan was originally just a normal person, but one day he traveled through time and became the famous Doomsday in the DC universe.
The Doomsday does not refer to a single monster, but a terrifying legion, coming from the technological civilization of Krypton.
But Doomsday is not Superman. In fact, he is a terrifying biochemical weapon invented by resurrecting the dead bodies of Kryptonians after gaining superhuman powers.
Lu Yuan happened to become one of the Doomsday Suns after traveling through time, and entered the core of the sun and stayed there for 100,000 years.
One day Lu Yuan woke up, but when he flew back to Earth, he discovered that this was no longer the Earth of the DC universe. For some reason, he seemed to have come to Marvel?
"Isn't this invincible? Without kryptonite, I would be a god."