At The End Of Time, we learn that anyone can be there to watch over time and the multiverse. We saw He Who Remains watching over time and the universe, but also controlling it with everyone in time, including the TVA at The End Of Time. We then see Loki going to The End Of Time and now watches over the multiverse and time, but instead of controlling it, he's giving everyone free will.

Which leads to my question, before He Who Remains took control of the sacred timeline, before the multiversal war with the Kang variants, and before the Kang variants discovered the multiverse, was there anyone watching over time and the multiverse before He Who Remains?

Also, I have a theroy for Avengers: Doomsday that the next one that will be at The End Of Time is Victor Von Doom/Doctor Doom (RDJ), which could be how he becomes God Emperor Doom and how he creates BattleWorld, and it could he how Doctor Doom wins like how Thanos won in Avengers: Infinity War