Thread:ThatScrewyDuck/@comment-39531022-20191017141124/@comment-39531022-20191017163540

It's been a while since I saw Madagascar, but I see your point. As for Ronan, here's his TV Tropes entry:

Ronan the Accuser is a genocidal Kree terrorist and renegade wholly devoted to the destruction of the planet of Xandar. Disgusted by his people signing a peace treaty, Ronan is introduced to the audience by confronting a captive member of Xandar's Nova Corps and crushing the helpless man's skull with his Universal Weapon. Beginning the film as a henchman of the Mad Titan Thanos, Ronan seeks to gather an item for Thanos so that he will destroy Xandar for him. Under Thanos, Ronan has committed multiple murders, including the deaths of Drax the Destroyer's wife and children. He later pursues the film's motley band of heroes to the space prison The Kyln, and orders a full massacre of every prisoner to leave no witnesses. When he realizes the power of the Infinity Stone he has been sent to retrieve, Ronan double crosses Thanos and vows to kill him after he's finished with Xandar. Assaulting the planet, he even orders his own men to become suicide bombers by flying their ships into Xandar, injuring and killing numerous civilians. He later kills over 80,000 members of the Nova Corps in one fell swoop. After mocking Drax about finally remembering murdering his family, he declares Xandar "guilty" by his psychotic philosophy and attempts to purge it of all life. Brutal, violent, relentless and unforgiving, Ronan stands as an example of rage, fanaticism, unchecked hatred and utter cruelty, and really stands out in such a relatively light-hearted movie.

My problem is he only wants to destroy one planet, and since he has an Infinity Stone, he could have theoretically done a lot worse than he does.