I figured that a list could help people, since most sites instead choose to list the ones with RELEASED hidden abilities, but the list tends to be so long since nearly all of them have been released so far.
With that said, here's a list of those with Unreleased Hidden Abilities:
* Articuno (Snow Cloak)
* Zapdos (Lightningrod)
* Moltres (Flame Body)
* Chikorita (Leaf Guard) / Bayleef (Leaf Guard) / Meganium (Leaf Guard)
* Cyndaquil (Flash Fire) / Quilava (Flash Fire) / Typhlosion (Flash Fire)
* Totodile (Sheer Force) / Croconaw (Sheer Force) / Feraligatr (Sheer Force)
* Raikou (Volt Absorb)
* Entei (Flash Fire)
* Suicune (Water Absorb)
* Regirock (Sturdy)
* Regice (Ice Body)
* Registeel (Light Metal)
* Heatran (Flame Body)
* Snivy (Contrary) / Servine (Contrary) / Serperior (Contrary)
* Tepig (Thick Fat) / Pignite (Thick Fat) / Emboar (Reckless)
* Oshawott (Shell Armor) / Dewott (Shell Armor) / Samurott (Shell Armor)
* Gothita (Shadow Tag)
* Klink (Clear Body)
* Litwick (Shadow Tag) / Lampent (Shadow Tag) / Chandelure (Shadow Tag)
* Rufflet (Hustle)
* Larvesta (Swarm) / Volcarona (Swarm)
Note that Gothita, Klink, and Rufflet have had Hidden Abilities released on their evolved forms. However, these releases were never on female Pokémon, so passing the Hidden Ability through breeding is impossible.
Additionally, the following hidden abilities were only released on Male Pokémon, so using them in combination with Egg Moves is illegal:
Bulbasaur (Chlorophyll) / Ivysaur (Chlorophyll) / Venusaur (Chlorophyll)
Charmander (Solar Power) / Charmeleon (Solar Power) / Charizard (Solar Power)
Squirtle (Rain Dish) / Wartortle (Rain Dish) / Blastoise (Rain Dish)
Treecko (Unburden) / Grovyle (Unburden) / Sceptile (Unburden)
Torchic (Speed Boost) / Combusken (Speed Boost) / Blaziken (Speed Boost)
Mudkip (Damp) / Marshtomp (Damp) / Swampert (Damp)
Turtwig (Shell Armor) / Grotle (Shell Armor) / Torterra (Shell Armor)
Chimchar (Iron Fist) / Monferno (Iron Fist) / Infernape (Iron Fist)
Piplup (Defiant) / Prinplup (Defiant) / Empoleon (Defiant)
Pansage (Overgrow) / Simisage (Overgrow)
Pansear (Blaze) / Simisear (Blaze)
Panpour (Torrent) / Simipour (Torrent)
Gothorita (Shadow Tag) / Gothitelle (Shadow Tag)
Generation 6 Update! Now, any Pokémon, whether male, female, or genderless, can pass its Hidden Ability onto its offspring. As such, any Pokémon on the second list is legal with Egg Moves for Gen VI games. And Gothita, Klink, and Rufflet with Hidden Abilities are legal in Gen VI games as well.
Last edited by GoldenSandslash15
on Tue Oct 15, 2013 5:12 pm, edited 2 times in total.
Avatar made by User of Shadows.
From The Smog, Issue 32: "Now there is no excuse for anyone to post discussions on the PS! Forums nobody cares nor reads about."
Yeah, it's not like that's incredibly rude and offensive or anything... >_<