>##Generations II to V##
Hidden Power inflicts damage using a type and base power determined by the user's IVs.
Hidden Power can receive same-type attack bonus. For instance, a Bug-type Pokémon will receive same-type attack bonus when using a Bug-type Hidden Power. Although Hidden Power is Normal-type in the game's data, a Normal-type Hidden Power is not obtainable.
Hidden Power is unaffected by Normalize.
Calculations:
Generation 2
Type: This was decided in this way
HP Type = a mod 4 + b mod 4,
where:
- 'a' is the Attack IV,
- 'b' is the Defence IV
-" 'mod' is modulo. Modulo is such that "b mod a" is the remainder of b/a ". Credits to PhysicsForums
Power:
HP Power = (5* {v + 2w +4x + 8y} + z) / 2
where:
v depends on the Special IV.
w depends on the Speed IV.
x depends on the Defense IV.
y depends on the Attack IV.
Generation 3-4
[5 and 6 also]
Type:
HP Type = [(a + 2b + 4c + 8d + 16e + 32f) * 15]/63
where:
a depends on the HP IV.
b and c depend on the Attack and Defense IV's respectively.
d depends on the Speed IV.
e and f depend on the Special Attack and Special Defense IV's respectively.
Power (Before Gen 6)
HP Power =[ {(u + 2v + 4w + 8x + 16y + 32z) * 40}/ 63 ] + 30,
where:
u depends on the HP stat.
v and w depend on the Attack and Defense stats respectively.
x depends on the Speed stat.
y and z depend on the Special Attack and Special Defense stats respectively.
There you have it! Very confusing, I know, but just maths in the end. A whole lot of it.
