What Pokemon moves do not follow the regular type chart?

Question

For example, Freeze Dry is super effective on water and Dragon Rage always does 40 damage, no matter the type

Answer 1

Moves that strictly change type effectiveness:

• Freeze Dry: Ice-type move super effective against Water-types.
• Flying Press: A Fighting type move that also does Flying type damage. Both types are involved in the damage calculation.
• Thousand Arrows: Ground-type move that hits Flying-types.

Additionally any Normal or Fighting-type move used by a Pokemon with Scrappy or Mind's Eye will hit Ghost-types.

Moves that do a set amount of damage:

• Sonic Boom: Universally does 20 damage to an opponent, (unless immune), never impacted by effectiveness.
• Dragon Rage: Universally does 40 damage to an opponent, (unless immune), never impacted by effectiveness
• Seismic Toss: Always does damage equal to level, (unless immune), never impacted by effectiveness.
• Night Shade: See Seismic Toss
• OHKO Moves: If Horn Drill, Sheer Cold, Guillotine, or Fissure hit, they always knock out the opponent, unless immune.
• Super Fang: Damages half the opponents health regardless of effectiveness, unless immune.
• Nature's Madness: Damages half the opponents health regardless of effectiveness.
• Ruination: Does half the opponents health regardless of effectiveness.
• Guardians of Alola: Z-Move, does 3/4 of opponent's health.
• Counter: Deals twice the damage of the last physical move used on the user.
• Mirror Coat: Deals twice the damage of the last special move used on the user.
• Comeuppance: Returns 1.5x the damage received by the opponent's last attack
• Bide Spends 2-3 turns building energy and then returns double the damage received during those turns.
• Metal Burst See Comeuppance
• Endeavor: Reduces opponent's HP to the same as your own
• Final Gambit: KOs user and does damage to opponent equal to the amount of HP the user had before fainting.

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Hope this helps! If I'm missing any, let me know!

Comments

1. Mirror coat deals double damage of special moves. You put physival by accident.
2. Bide does not function the same as metal burst. Using bide will cause make your pokemon unable to move for 2-3 turns. After 2-3 turns the pokemon deals double of the damage received in those turns.
3. Pain split also deserves a mention in my opinion. It equalizes the targets and the users HP. It may also heal the opponent but it still ignores type resistances.

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Pain split is a status move, not an attack move. Also corrosion just lets the user poison other Pokemon regardless of their types, their poison attacks still can't hit steel. The only exception is G-max malodor, for some reason.

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Salt cure is missing. Not sure if the initial hit affects the type chart, but the damage over time does.

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The initial hit doesn't, only the damage over time. Also, does Endeavor count? If Sonic Boom counts, Endeavor should too.

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I included endeavor