His Jab would be him Swinging his Hammer,

His Heavy slamming his Hammer Down, However this will be unique, and will be explained later,

His Parry would be a Fake-out Or Dodge.

His Dash would be unique, as instead of transitioning to running, it instead lets him Flash-step closer to the Enemy, Supporting an Offensive Play-style.

His Neutral Special would be Charged for 4.7 Seconds. When Finished, Teleport directly Behind Or In front of the Enemy.

His Up Special will be him throwing a quick Barrage of hammers, if he throws enough, he throws a big hammer that stuns enemies if they're on the Ground.

His Forward Special will be him Spinning around.

And as previously mentioned, he won't be able to run, so his walking will be in-between Running speed and walking speed to balance this.

And as a Unique Passive, He'll be able to dodge 5 hits, Dealing noticeably less Damage.
These can be regenerated over time, it will take 7.5 seconds for each dodge to regenerate.

And his Taunt will be him doing his Iconic Laugh.

I would go into EVERY move, like Up Air and Back air, but I am too tired to write these. I am simply writing this because I think it's a good idea to add Gerson as a Fighter.