char specific mechanic oddities

Autoguard/Guard point
H ries 236x/[x] series
When a clash happens, both players can cancel it following "on-hit" rules. When a superarmor happens, your character flashes red, takes damange, but the annimation of the attack continue. The opponent can cancel the attack that was absorved follwing "on-hit" rules.
But Ries shield rush have something completely different: a proper auto-guard. The opponent can't cancel their attack into anything, and Ries don't receive any damange from it.

Sneaky charge moves
C/H Ries 236[a]/[b], H roa 236[b]/6[c], F roa j[c]/236[b], C shiki 236[b], C sion 421[b]
Those attacks have a "charged" version, but they deliberately don't have the charge visual effect. They were created especifically for sneaky charges.

Clean hit
C/F wlen j214b/c , H wlen j214 a/b/c, C/H warc 5[b], kohaku 624c delay c
Those attacks can behave very different from the norm if a specific part of the animation connects. In white len's case, if she is exactly above the opponent, it will cause ground bounce. In Warc case, if it connects from max range in a airborn opponent, it will cause wallslam.

Attacks from blockstun
C/H ries 624x

Command tech
Ryougi 66/44/22 a/b/c
In the same fashion as Yamazaki/Cody "bad spray", Ryougi can attack when recovering, but only from a airtech.

The Haze
F wara 214x
This special move is anything bug straightfoward. When the opponent is inside it, they will slowly lose hp and gain tension...but it isn't verificable in trainning with life recovery activated. It increase air hitstun of moves when the opponent is touching it and launchers become untechable, leading to advanced combos.

Projectyle reflector
C/H aoko 624x, C/H/F kouma 22x, F len 214x, C/H/F ries 6b/ 6[b], H ries 624x
Very timing dependent, and may not work with some projectyles. But still can change some matchups.

Roll/command dash
F VSion, H Ryougi 6a+b during dash foward
This isn't listed in command list. Crosses the opponent, setting up some oki options (and some neutral for F vsion).

Homming
H mech 236a, H mech neco 22c, Archetype 236c
Those attacks don't fill the whole screen (like EX-Hiero/Soko darou), but they home in the opponent.

Crouch walk
Foward and backward for C/H/F neco arc and C neco chaos, foward only for C kohaku and C/H/F len
Those characters can walk around while crouched, fatal fury style. This adds extra spacing options, and can be annoying to deal with.

Airdash with no collision box
C/H/F neco arc and neco chaos
They can go through the opponent using airdash.

Poison
C/F kohaku 22222c (mech 22b?)
In the middle of a movelist with 22c (cactus) and 2222(johny), this may pass unnoticed. This creates a purple version of johnny, that throws a poison mist. If it hits the opponent, they will lose some hp along the time.

Raging storm....(???)
C/F kohaku 16243c
What a raging storm command is doing in melty? This special moves put kohaku in bloodheat. Kohaku on drugs.

Life drain
VSion arc drive/ Sachin 624c, C akiha 624x, C/H/F Vakiha normal grab
Those attacks drains a little of the opponent HP. Can be very important for V akiha.

Meter drain
C/H akiha 22x, C/F vakiha 22x

Meter damange
Hisui 4b

Iori's "El taco"
C Hisui 44jbb
C akiha j442c

Reverse edge activation
C/H aoko 421x, Nero 214b
Those attacks only activates when you let go of the attack button used.

Comboable normal throw anywhere
miyako, pciel

Comboable normal airthrow midcombo
pciel, len

No air chain
C/F satsuki, H/F kouma, C/H/F pciel

Teleport dash
F nero dash foward and backward, C nero dash foward, C/F white len

Cross under
C/H/F arcueid dash, sion 421[x], f roa 236[b], C/H kouma 22b and F kouma 421B from point blank;
falled bodies only- F ries dash

Normal throw holding 2
C/H/F arcueid, C/H/F roa
Holding 2 triggers a variation of the normal throw, that causes hard knockdown.

Superjump pursuit
C/F arc 5C in a airborn opponent followed by another 5c
Wlen 2cc9
C/H tohno 4bb8
C/H/F sion 3c8
C/H/F mech hisui 4c8
C/H/F mech-neco 4c8