Battle 1: Selene/Sans vs Faba

Faba's team (enemy):

-Claydol

-Bruxish

-Raichu

-Alakazam

-Hypno

Sans' Team (ally):

Uses a mix of dark and ghost Pokémon

Ace: Alolan Marowak

-Spiritomb

-Mandibuzz

-Dusknoir

-Gengar

-Shedinja

Battle 2: Selene/Undyne vs Archie

Archie's team (enemy):

-Mightyena

-Crobat

-Muk

-Sharpedo

-Kyogre

Undyne's Team (ally):

Mains water types

Ace: Sharpedo

Lanturn

Gyarados

Swampert

Vaporeon

Araquaniad

Note: She also owns a Samurott but it isn't used in this battle

Battle 3: Selene/Alphys vs Maxie

Maxie's team (enemy):

-Mightyena

-Crobat

-Weezing

-Camerupt

-Groudon

Alphys' team (ally):

Ace: Heliolisk

-Magnezone

-Rotom (Wash)

-Silvally (Water Memory)

-Oricorio

-Klingklang

Battle 4: Selene/Papyrus vs Cyrus

Cyrus' team (enemy):

-Houndoom

-Honchkrow

-Crobat

-Weavile

-Giratina

Pap's Team (ally):

Ace: Marowak (Normal)

-Pangoro

-Archeops

-Flygon

-Sandslash (Alola Form)

-Absol

Battle 5: Selene/Asgore vs Lysandre

Lysandre's Team (enemy):

-Mienshao

-Honchkrow

-Gyarados

-Pyroar

-Zygrade

Asgore's Team (ally):

Ace: Nidoking

Florges (yellow)

Dragonite

Aegislash

Kingdra

Pyroar (male)

Battle 6: Selene vs Ghetsis

Note: Toriel doesn't ever team up with Selene as she was one of the last ones to arrive. She does, however, throw a fireball at him for harming Lillie.

Ghetsis' Team (enemy):

Cofagrigus

Bouffalant

Bisharp

Hydreigion

Kyurem (fused with Zekrom)

- - -

Penultimate battle: Asriel Phase 1:

Once Ghetsis is defeated and Selene steps into the teleporter, she finds herself forced to continue onwards as the teleporter gets shut off by some unknown force, leaving Guzma, Toriel, Colress, Lillie and the others behind. After passing through an empty corridor leading towards the lab, Selene finds herself in an empty room where a certain someone awaits.

Note: His fight is broken up into 3 major phases. The first phase he uses his main team minus his Ace (Sylveon). Phase two he uses Pokémon belonging to each member of RR. Phase 3 he only uses his Sylveon but it plays out more like a cutscene as he refuses to have it attack, minus the use of a Z-move.

Asriel's team (Phase 1):

Note: All of them have a totem boost

Lycanroc (Midday form)

Talonflame

Kommo-o

Raichu

Lurantis

Asriel Phase 2

Sharpedo

Camerupt

Weavile

Pyroar

Hydreigion

Asriel Final Phase:

Sylveon

Final battle: Selene/Asriel vs Giovanni

Asriel will use his team from his first phase plus his Sylveon