UNDERTALE/DELTARUNE - All Boss Themes (With Leitmotif Guide)

Footage Credit: ‪@Merg‬Asriel ‪@Fasgort‬Omega Flowey Timestamps: 00:00:00 - Ghost Fight 00:00:51 - Heartache 00:02:39 - Nyeh Heh Heh! 00:03:11 - Bonetrousle 00:04:09 - Dummy 00:06:35 - Spear of Justice 00:08:28 - Metal Crusher 00:09:31 - Spider Dance 00:11:11 - Wrong Enemy !? 00:12:09 - Death by Glamour 00:14:22 - Mad Mew Mew 00:15:30 - ASGORE 00:18:21 - Your Best Nightmare 00:26:02 - Hopes and Dreams 00:29:02 - Burn in Despair! 00:29:16 - SAVE The World! 00:31:03 - His Theme 00:32:49 - Battle Against a True Hero 00:35:23 - Power of NEO 00:38:17 - MEGALOVANIA 00:40:53 - Song That Might Play When You Fight Sans 00:41:53 - Song That Plays When Someone Verses Sans 00:43:39 - Checker Dance 00:44:57 - Vs. Lancer 00:45:38 - Vs. Susie 00:46:59 - Chaos King 00:48:45 - THE WORLD REVOLVING 00:50:26 - Cyber Battle 00:52:14 - Smart Race 00:53:18 - NOW'S YOUR CHANCE TO BE A 00:54:23 - It's Pronounced Rules 00:55:22 - Attack of the Killer Queen 00:57:22 - Knock You Down !! 00:59:45 - BIG SHOT 01:02:05 - Ruder Buster 01:03:49 - It's TV Time! 01:06:34 - Black Knife 01:08:31 - BURNING EYES 01:09:37 - A DARK ZONE 01:11:55 - Hammer of Justice 01:14:08 - SPAWN 01:15:19 - GUARDIAN 01:19:05 - Need a Hand!? 01:19:52 - Catswing 01:21:50 - Inappropriate Recycling 01:23:26 - Petal Dance 01:24:59 - Violet Tactics 01:26:04 - Cutie Mew Mew Magic 01:29:09 - Flower Man Undertale is a 2015 2D role-playing video game created by American indie developer Toby Fox. The player controls a child who has fallen into the Underground: a large, secluded region under the surface of the Earth, separated by a magical barrier. The player meets various monsters during the journey back to the surface, although some monsters might engage the player in a fight. The combat system involves the player navigating through mini-bullet hell attacks by the opponent. They can opt to pacify or subdue monsters in order to spare them instead of killing them. These choices affect the game, with the dialogue, characters, and story changing based on outcomes. Deltarune is an episodic role-playing video game by Toby Fox as a follow-up to his 2015 video game Undertale. The first two chapters were released for free in 2018 and 2021. The third and fourth chapters released together in 2025 as part of a paid version. Future chapters will be added to the paid version as free updates. In the game, the player controls a human teenager, Kris, who is destined to save the world together with Susie, a monster, and Ralsei, a prince from the Dark World. During their quest to seal the Dark Fountains prophesied to end the world, the group makes both friends and foes. The combat system is turn-based and uses bullet hell mechanics. Similarly to Undertale, enemy encounters can be resolved peacefully or through violence.