Bowser Jr.

Bowser Jr., known as Koopa Jr. (クッパＪｒ．Kuppa Junia) in Japan, or sometimes simply called "Jr." is a secondary antagonist in the Super Mario franchise. As his name implies, he is Bowser's, and serves as the heir to his throne. He debuted in Super Mario Sunshine, and has since helped his father to kidnap Princess Peach and battle Mario and Luigi in many subsequent games. He has also taken on playable roles in spin-off titles such as Mario Superstar Baseball and Mario Strikers Charged. Jr. wants nothing more than to do his father's evil will, and Bowser's rarely seen emotional side is often brought out by his interactions with his son.

Why He's A Good Evil Bowser Jr.

 * 1) He has a great father-son relationship with Bowser.
 * 2) He has a surprisingly cute design.
 * 3) He was a great antagonist in Super Mario Sunshine and he started appearing in more games like Mario Golf: Toadstool Tour, Mario Kart: Double Dash!!, Mario Power Tennis, etc.
 * 4) He returned in Mario Kart 8 Deluxe in the Mario Kart series.
 * 5) He is very ambitious for a little kid.
 * 6) He's also very smart for his age too.
 * 7) He's masterfully voiced by Delores Rogers and Caety Sagoian.
 * 8) He's always willing to get out of his way to please his dad in any way, shape or form.
 * 9) He has limits when it comes to serving Bowser. For example, in Bowser's Fury, he was going as far as teaming up with Mario to save Bowser from his Fury form and turn him back to normal.
 * 10) Speaking of his father-son relationship with Bowser, they have a lot of cute moments such as the Nintendo Switch Parental Controls video where they spend time playing the Nintendo Switch together.
 * 11) In some games he appears in, he has his signature Junior Clown Car, like in New Super Mario Bros. Wii, New Super Mario Bros. U, Super Smash Bros. for 3DS and Wii U, Super Smash Bros. Ultimate, Mario Tennis Aces and Bowser's Fury. This is also a nice reference to how Bowser uses it in his boss fight in Super Mario World.
 * 1) In some games he appears in, he has his signature Junior Clown Car, like in New Super Mario Bros. Wii, New Super Mario Bros. U, Super Smash Bros. for 3DS and Wii U, Super Smash Bros. Ultimate, Mario Tennis Aces and Bowser's Fury. This is also a nice reference to how Bowser uses it in his boss fight in Super Mario World.

Bad Qualities

 * 1) He can be bratty and annoying at times.
 * 2) His crying in Mario Golf: Toadstool Tour and Mario Kart: Double Dash!! when he loses is atrocious to listen to.
 * 3) He was responsible for the Koopalings' flanderizations from being Bowser's children to some unidentified top-notched minions. Heck, in Super Mario Maker he even stole Ludwig's moveset from Super Mario World!
 * 4) While he is a great character, Nintendo gave him too much spotlight and after Sunshine he took part of almost every mainline and spinoff Mario games.
 * 5) Despite helping Mario in Bowser's Fury to get Bowser back to normal, he was ungrateful at the end cutscene, as he screams at Mario at the end of the game.