For convenience, I'm bringing onto here the (abridged) parts that may be of immediate interest to know:






Notes on the character:
The main difference for Gladstone in comparison to the rest would be his Pixels. Given how integrated his ability is with the way he moves, they'd be central to his fighting and mobility.
Potential examples: when blocking, a Pixel would appear diagonally half-sunken into the ground to help him get a better footing to withstand the blow; When jumping mid-dash, he'd climb two or three of his cubes as if they were steps to allow him to jump higher and further; If he needs to stop running suddenly, he'd spawn a Pixel right next to him in such a way that he could grab onto or get his body to stop him without having to go any further trying to decelerate; If he's knocked into the air, his recovery (if you're doing that) would involve him creating Pixels underneath him while still in the air (but within jump-striking reach for other characters at minimum, to avoid trolling) to soften his landing; When trying to get behind his opponent, he could attack the opponent to get him to lower himself and then spawn a Pixel along to way to help jump to the other side faster than a normal person would.

Playstyle:
Given you already have someone on hand-to-hand in the form of Honey, Gladstone could fill in the tonfa-wielder spot. It even makes the creation of specials and supers easier to design since these can become electric.

In comparison with others, he'd be fragile, but mobile. Combos would focus more on being efficient rather than long or flashy, and use his ability as much as possible to improve them. It would probably be best to have moves that would get him into better positions to continue the attack or grabs that attempt to put the enemy in more vulnerable situations.

Specials: Non-super moves that are unique to a particular character.
-Turn the electricity on on the tonfas for an amount of time to get extra damage and sweet FX?
-Sends one of his Pixels to sit on the opponent's face to distract them for a few moments (the idea being that the inside of a Pixel makes the vision rather blurry for the one in it)?
-Spawn a pixel underneath him on a jump. This would allow the player to potentially continue attacking in the air as if he were on the ground.

Supers: Big flashy "kill you until you're dead" moves.
-Tonfas become electrified if not already. Twirl the tonfa from his left against the head before following with the same from the opposite end and then reverting the movement. It continues with Gladstone then placing the weapon on his left on the nape of his opponent and using that as leverage to pull the person to the other side, tripping them along the way before landing on Pixels placed just slightly above the opponent (so as to not have direct contact) and then smashing his weapons against the other's chest, shocking him for a few moments.
(If you do need a name for the move, "Defibrillation" or something along those lines could work)

Flair: Things like intros, outros, taunts, defeat animations, hair and cloth physics, etc.
Taunt: Take a moment to just pet and praise the work his Pixels are doing, ignoring the other fighter completely. If successfully done until the end, he shrinks the Pixel he has on his hands and hides it in his hair.
Who's an adorable little Pixel that's doing a great job? You are!