Literally the best character on the message board in my opinion due to a multitude of reasons.
Movement - You have so many different movement options that are extremely fun to use with each-other. Making good use of the several moves at your disposal is very rewarding. Triple jumping into a wall jump into a dive, there's such a high skill ceiling with this character and so many awesome things you can do with him, it's amazing.
Visuals - The sprite-work here is BEAUTIFUL. Amazing work, I love it. And it fits perfectly in with SRB2 as well. The rainbow-effect on Mario when he gets a star as a homage to Galaxy 2 also looks amazing.
The attention to detail here is astonishing, the fact that Ground Pounding deals twice the damage as a normal move is awesome, being very useful for taking out bosses quicker.
Powerups - The powerups are awesome, with the Cape Feather being the best one in my opinion because flying with him feels REALLY GOOD, and allows you to get to so many places so fast, especially being able to cancel your dive with the cape-spin so that you can float normally and wall jump, just the movement options are extended so much. Not to undermine the usefulness of other powerups, its just the cape offers so much that its hard to not say anything about it. All of the powerups are really solid in my opinion.
I also like how the powerups replacing the item-boxes makes sense, for example it makes perfect sense for the Cape Feather to replace the Whirlwind Shield.
I also like how faithful it is from the original series, for example the Giant Mushroom awarding 1ups for destroying a certain amount of enemies is really fun.
The Super Mario Galaxy health bar,
and of course the coins replacing rings just like in the actual games.
If you get a Star Powerup AND a Giant Mushroom you can get like 20 lives extremely quick, a bit broken but I LOVE it!
Him being able to grab ledges is really useful, how his move-set offers great height and great speed when used properly is really nice, everything here is solid as a Block.
I haven't even mentioned the amount of extra stuff here added that isn't necessary but is greatly appreciated. His SRB2Persona support is AWESOME. I didn't even know you could do action commands in SRB2Persona but you put them in and I love you for it. I love the Super Mario RPG and Paper Mario series and you did them, i don't even know if justice is the right word, it's so good and cool.
The main seller with this character for me is you can do things with this character that no other character can do, he's easy to play and harder to master, when you do a trick to get up to a high place you earned that. Speed-running with this character is amazing.
The fact that you can do so many things with this character makes him my favorite, and I genuinely believe he's the best character.
The amount of effort, work, and love put into this character is extremely high. Thank you so much for allowing us to "a-play-a your game", y'know since playing as this character actually makes me feel like I'm playing a different game, he operates so differently from the vanilla characters, he's so unique and special in the best ways.
I feel like even after a long time, and a ton of more great character mods show up on this message board, this will still be the king. <3