Alright, so I know he fights using Pins. Any specific Pins that are especially notable or flashy?
Something to note is the difference between pins and "psychs." Psychs are the powers themselves, and each pin has a specific psych assigned to it. Most psychs appear on multiple pins, but usually (if not always) have differences in damage, properties, and even how they're executed.
If you wanna look up what psychs there are, they're listed
here (though not all pages have demonstration GIFs or even full descriptions). Note that psychs are divided into categories--basically "positive" equals melee attacks and "negative" means ranged.
To that end, some of the more notable psychs to me (mostly leaning one ones I see as more "iconic"):
Pyrokinesis: Summon a controllable stream of fire. Neku's first psych.
Shockwave: A series of sword-like slashing attacks. Would make a good jab, maybe even other basic moves like an aerial or two.
Massive Hit: Summon and swing a huge light sword. Obvious forward smash.
Lightning Arrester: Shoot a large and powerful lightning bolt.
Piercing Pillar: Make a large icicle shoot up out of the ground. There's some versatility for this one, though I'm partial towards it being up special (appearing below Neku to launch him upward and lingering for a second).
Force Rounds,
Energy Rounds,
Burst Rounds, and
Patrol Rounds: Basic projectiles that each come in various distinct varieties. Burst Rounds shots explode into smaller shots, and Patrol Rounds shots have boomerang qualities.
Entanglement: Summon a spiked chain that crosses the screen. (Would require some redesigning to keep fair in a Smash context.)
