Bowser Jr. wasn’t introduced to the franchise until 2002’s Super Mario Sunshine, but the character fits really well with the Yoshi’s Island aesthetic, as @GBrothersStudio clearly demonstrates.

Luigi, Yoshi ... Land from Bowser and the Koopalings. Hell even offer them a ride on his back to help them reach new heights and earn items by swallowing enemies. The Yoshi species has continued ...