I wish new bosses added in minecraft

Bosses are one of the most interesting content. It is because you need to have the right conditions and a lot of preparation to defeat them. It would also be helpful for players to continue playing the game if they are given unique rewards when they defeat them. That is why it would be good to have at least 5 types of these bosses. The bosses that I would like to see added are the red dragon that was canceled in the past, or the giant slime, mutant zombie, spider queen, stone golem that are uniquely modified from existing mobs. It would also be good to add these to a new dimension that can be accessed by combining enderstone, netherrock, and cobblestone to create blocks and making portals.