New Pokéball Combinations

Like it's predecessor, Ultra Sun and Ultra Moon has introduced several new pokéball combinations by expanding its regional pokédex. Not only did this create tons of new Beast Ball and Apricorn ball combinations, it also brought forth some new hidden ability (HA) combinations as well as some other miscellaneous changes!

New HA Combinations

Apricorn Balls

Jynx line
Kanto Raichu
Kanto Exeggutor
Kanto Marowak

Regular Balls

Orange Flabébé line
White Flabébé line

Miscellaneous

Heavy Balls
The glitch that prevented capturing these pokémon has been corrected.

Beldum Line
Tapu Koko
Tapu Lele
Tapu Bulu
Tapu Fini

Event Lycanroc

The event Rockruff with the ability "Own Tempo" has been confirmed to be breedable by @theSLAYER. Upon evolving, it will turn into Dusk Lycanroc. Because it counts as the same species, you are capable of chaining all legal balls by breeding with a regular Rockruff, Unlike the wondercard, there is no shiny lock for breeding. This means you can get a shiny dusk Lycanroc!

The legal balls are:

All store-bought pokéballs (Pokéball, Great, Ultra, Dive, Dusk, Heal, Luxury, Nest, Net, Premier, Quick, Repeat, and Timer)
Beast Balls
All Apricorn Balls (Fast, Friend, Heavy, Level, Love, Lure, Moon)

Electrode
Electrode is another strange occurrence. It is found Rainbow Rocket's Castle, and is very easy to miss if you are not prepared. Because non-alolan pokemon have a call rate of "0", it is impossible to get it's hidden ability. This means the only new combination for Voltorb/Electrode is Beast Ball with the ability static and soundproof only. The encounters are shiny locked, so if you want a shiny variation, you will need to breed. They also pack Explosion, so be sure to be properly prepared.

Flabébé line
The Flabébé line is also noteworthy to mention due to the mechanics needed to acquire each color, as well as a bug. At the moment, only red Floette are capable of calling for help. Blue, orange, white and yellow Floette are unable to call. Because of this quirk, the blue variation is the only color that is unable to be have it's HA legally for Apricorn/Beast balls. You can still have its hidden ability in regular Pokéballs from the Friend Safari in XY

The yellow variation is only found only in Melemele Meadow. It can be encountered normally, or from another Flabébé calling for help in this meadow.
The red variation is only found only in Ula'ula Meadow. It can be encountered normally, or from another Floette calling for help in this meadow.
The blue variation is only found only in Poni Meadow. It can only be encountered normally, as it has a call rate of 0. HA is illegal Apricorn/Beast Balls.
The orange variation is found in Melemele Meadow and Ula'ula Meadow. It can only be encountered when another Flabébé or red Floette calls for help.
The white variation is found in Melemele Meadow and Ula'ula Meadow. It can only be encountered when another Flabébé or red Floette calls for help.

Breedable Pokémon

Beast Balls

Bulbasaur line (Island Scan)
Charmander line (Island Scan)
Squirtle line (Island Scan)
Weedle line (Island Scan)
Pidgey line (Island Scan)
Ekans line
Seel line
Onix line (Island Scan)
Voltorb Line *
Lickitung line
Mr. Mime line
Jynx line
Hoothoot line
Natu line
Mareep line
Aipom line
Yanma line (Ultra Wormhole)
Wooper line (Ultra Wormhole)
Pineco line
Dunsparce
Heracross
Remoraid line
Slugma line (Ultra Wormhole)
Mantine line
Houndour line
Larvitar line
Treecko line (Island Scan)
Torchic line (Island Scan)
Mudkip line (Island Scan)
Lotad line (Ultra Wormhole)
Seedot line (Ultra Wormhole)
Taillow line (Ultra Wormhole)
Ralts line (Island Scan)
Mawile
Aron line (Island Scan)
Meditite line (Ultra Wormhole)
Electrike line
Spoink line (Ultra Wormhole)
Swablu line (Ultra Wormhole)
Corphish line
Baltoy line
Kecleon
Shuppet line
Tropius
Clamperl
Turtwig line (Island Scan)
Chimchar line (Island Scan)
Piplup line (Island Scan)
Buizel (Ultra Wormhole)
Buneary line
Hippopotas (Ultra Wormhole)
Skorupi line (Ultra Wormhole)
Snover line (Ultra Wormhole)
Rotom (Island Scan)
Audino (Ultra Wormhole)
Basculin
Dwebble line (Ultra Wormhole)
Scraggy line
Sigilyph (Ultra Wormhole)
Zorua line
Minccino line
Ducklett line (Ultra Wormhole)
Frillish line
Elgyem line
Stunfisk (Ultra Wormhole)
Mienfoo line
Druddigon
Golett line
Pawniard line
Larvesta line
Chespin line (Island Scan)
Fennekin line (Island Scan)
Froakie line (Island Scan)
Scatterbug line (Island Scan)
Litleo line
Flabébé line (All colors) **
Furfrou
Inkay line
Binacle line (Ultra Wormhole)
Skrelp line
Clauncher line
Helioptile line (Ultra Wormhole)
Hawlucha
Dedenne
Noibat line

Apricorn Balls

Bulbasaur line (Island Scan)
Charmander line (Island Scan)
Squirtle line (Island Scan)
Treecko line (Island Scan)
Torchic line (Island Scan)
Mudkip line (Island Scan)
Lotad line (Ultra Wormhole)
Aron line (Island Scan)
Electrike line
Corphish line
Kecleon
Shuppet line
Tropius
Turtwig line (Island Scan)
Chimchar line (Island Scan)
Piplup line (Island Scan)
Hippopotas (Ultra Wormhole)
Skorupi line (Ultra Wormhole)
Snover line (Ultra Wormhole)
Rotom (Island Scan)
Audino (Ultra Wormhole)
Basculin
Dwebble line (Ultra Wormhole)
Scraggy line
Sigilyph (Ultra Wormhole)
Zorua line
Minccino line
Ducklett line (Ultra Wormhole)
Frillish line
Elgyem line
Stunfisk
Mienfoo line
Druddigon
Golett line
Pawniard line
Larvesta line
Chespin line (Island Scan)
Fennekin line (Island Scan)
Froakie line (Island Scan)
Scatterbug line (Island Scan)
Litleo line
Flabébé line (All colors) **
Furfrou
Inkay line
Binacle line (Ultra Wormhole)
Skrelp line
Clauncher line
Helioptile line (Ultra Wormhole)
Hawlucha
Dedenne
Noibat line

* Voltorb cannot have it's HA in a beast ball.
** Blue Flabébé cannot have it's HA in these pokéballs.

Non-breedable Pokémon
All the following Pokémon, except Zygarde, are found in ultra wormholes and are capable of being shiny. Zygarde is still shiny locked.

Beast Balls