When the Dark Space Bear heard Alister's words, the Dark Space Bear didn't immediately reject it. After all, it knew that due to the disparity between their strength, it could easily be subdued by this human in front of it.
It was well aware that even if it didn't want to, the Dark Space Bear had no choice but to listen to Alister. If he didn't want to die, he would have no choice but to listen to someone stronger than him.
Of course, that was assuming it wasn't a request that trampled on his pride and dignity.
Other monsters might be spineless and would put their life above their pride and dignity, but the Dark Space Bear wouldn't want to be humiliated.
As the Monster King, the Dark Space Bear was the strongest among all the monsters in the entire world. Even those scattered monsters from other forbidden areas who had reached the demigod-level weren't as strong as it was.