Strange Lion?

In the Lion Guard, we meet a strange lion that Scar met when he was leader of the Lion Guard. We don't know that much about him. Only that he tried to convince Scar to overthrow Mufasa, but failed and got killed by Scar. And, that he was the one that got his cobra ally to give Scar his scar.

However, even though we don't really know much more about him, what i would like to know is, how was he going to keep hold of the Pride Lands if he had overthrown Mufasa? Does he have a secret army? Or, would he try to get the Pride Rock pride on his side by using Scar as his ally?

Let me know your thoughts below. How would the Strange Lion rule the Pride Lands if Scar had joined him?