Mario's and Luigi's lost brother has arrived

Finally, Super Kevin is here!
Kevin (or Super Kevin) is the lost brother of Mario and Luigi. He was once Bowser’s hostage in the castle for many years, but thanks to his special fireball, he has managed to escape from the clutches of the King Koopa. Now it’s time to take revenge!
Features of his abilities:

• jump rise rate: same as Luigi
• jump fall rate: same as Mario
• double fireball shooting at once (during ducking as well; moreover, hold the fireball -shooting button down to keep shooting at a normal rate without having to release the button)
• bounce off of enemies: twice bigger
• skidding: same as Mario

He is compared to SMB2J and Super Mario Bros. Deluxe!
Kevin created by Szemigi and “2x fireball” hack created by teeporage777
https://www.romhacking.net/hacks/4375/