undertale sans, chara and the other bosses ( and deltarune charcters)

Undertale Powers

Become one of 36 playable UNDERTALE and DELTARUNE characters, each with a custom 3D model, animated abilities and a character-inspired entrance. Summon Gaster Blasters, raise bones from the ground, wield Chara’s Real Knife or tower over your enemies as Omega Flowey.

Fight mobs or challenge your friends with matching ability items, compact health and cooldown displays, powerful transformations and different fighting styles to explore.

A playable cast from UNDERTALE and DELTARUNE

Play as Chara, Sans, Asgore, Undyne, Papyrus, Toriel, Muffet, Mettaton NEO/EX, Napstablook, Asriel and Omega Flowey.

The roster also includes Mad Dummy, Mad Mew Mew, Doggo, Lesser Dog, Dogamy, Dogaressa, Greater Dog and Annoying Dog, alongside the True Lab Amalgamates: Endogeny, Memoryhead, Reaper Bird, Lemon Bread and Snowdrake’s Mother.

The DELTARUNE roster brings its own designs, sizes and mechanics:

• King: pull enemies with a belly-chain and turn a chained court into Crown Quake.
• Jevil: ride a scythe carousel, shuffle card suits with different effects and split Devilsknife into mirages.
• Queen: cross acid on stepping stones, use a control plug and trigger planted banana traps.
• GIGA Queen: combine giant fists, rocket-powered sidesteps and a timed boxing parry.
• Spamton NEO: charge BIG SHOT, link enemies with puppet strings and hatch or detonate Pipis.
• Tenna: build ratings with spotlights, hop through TV portals and power up Audience Vote.
• Roaring Knight: plant rifts, travel through sword tunnels and reposition before an echo slash.
• Titan: sweep with enormous eye-covered palms and direct beams through floating lenses.
• Hammer of Justice / Gerson: strike with a heavy hammer, bounce an anvil off walls and catch incoming projectiles.
• Shadow Mantle Holder: place shadow traps, connect feather sigils and counter a hostile hit.
• Pink: separate your ghost, cast from two positions and reunite through a bright ribbon path.
• Flowery: combine theatrical attacks, companion-flower powers and the Jarona-999 barrage.

An entrance for every character

Every character has a distinct entrance with full-body animation, custom props, particles and sound:

• Flowery falls onto a temporary Ralsei and squashes him flat like a pancake.
• Sans arrives through a shortcut and gives a casual shrug.
• Papyrus descends a bone staircase and strikes a heroic pose.
• Jevil springs from a playing-card box and spins into view.
• Spamton NEO descends on green strings and unfolds his wings.
• Omega Flowey assembles from roots, TV static and six orbiting souls.

Entrances play when you choose a character, respawn or reconnect. Use /entrance to replay your own scene and F5 to watch in third person. Combat interrupts the scene, and replaying it preserves your health, lives, forms and ability progress.

Omega Flowey: six souls, six different powers

Become the giant TV-and-plant monster with 140 HP, moving jaws, arms and roots. Unleash a charged TV Death Ray, thorn vines, bombs and flames, then use the power of six rotating human souls. The selected heart and ability item show your active soul.

• Cyan / Patience — Suspended Knives: record positions before knives cut across the marked paths.
• Orange / Bravery — Bravery Boxing Ring: punish enemies who stand still during the attack beats.
• Blue / Integrity — Gravity Ballet: drop ballet shoes onto warned positions, lift enemies and create landing pulses.
• Purple / Perseverance — Notebook Rails: send moving book rails across the battlefield to damage and slow enemies.
• Green / Kindness — Pan-Parry Kitchen: heal, parry a frontal hit and cook intercepted arrows into healing and splash effects.
• Yellow / Justice — Six-Chamber Lock On: acquire targets before individually aimed shots; solid cover breaks their locks.

Six-Soul Finale releases all six mechanics in sequence. Omega Flowey’s enormous form adapts to available space.

Flowery and Jarona-999

Flowery has an expressive humanoid design, a swept golden quiff, a green-and-orange waistcoat and a jacket carried over one shoulder. His attacks include Jarona, Prism Blow, Glue and Jarona-999.

His first defeat awakens Rainbow Flowery, doubling movement speed and unlocking three companion-flower abilities. Normal Flowery has five controls; Rainbow Flowery has eight.

Jarona-999 unleashes a rapid blue barrage with afterimages and floating damage numbers:

• Requires an enemy within 2 blocks and a clear line of sight.
• Attempts 24 separate hits of 999 raw damage; enemies can escape the range or take cover.
• Has a 30-second cooldown and works in both forms.
• Each eligible target has a 50% chance per cast to gain permanent immunity to Jarona-999, shown as 000.
• That immunity applies to Jarona-999 from any Flowery caster in the same world and survives death, role changes, reconnects and world restarts.

Flowery and Omega Flowey are separate playable characters, with distinct designs and ability kits.

Transformations and character mechanics

• Sans gains one extra life. His abilities unlock in his fragile 1 HP second life, surrounded by a purple aura and shifting eye colours.
• Undyne becomes Undyne the Undying after her first defeat.
• Asriel awakens a winged second form with stronger abilities.
• Mettaton NEO begins without ability controls. His first defeat transforms him into Mettaton EX and unlocks five abilities, following this mod’s custom progression.
• Chara converts iron swords into the Real Knife, with five times their damage and half their reach. Her heart changes colour with her soul ability: red improves speed, blue improves jumping and softens falls, and purple creates large teleportation lanes that respect obstacles.

How to play

1. Choose a character with a command such as /sans, /chara, /jevil, /flowery or /omegaflowey. Character-selection commands require operator permissions. Add a player name to assign a character to someone else.
2. Select an ability item in your hotbar and right-click to use it. Read its description for cooldowns, targeting and special conditions.
3. Press F5 to see your custom model, full-body abilities and entrance animation.

Damage and cooldowns are handled by the server. Some powers reward preparation, movement, counters or combinations between abilities.

Installation

Requires Minecraft Java Edition, Fabric Loader, Fabric API and a compatible Java runtime. Check the download page for the supported Minecraft release and dependencies.

Place Undertale Powers and Fabric API in your Fabric installation’s mods folder. For multiplayer, install matching mod files on the server and every client.

Credits

An unofficial fan mod with original mod artwork and custom Minecraft gameplay adaptations. UNDERTALE and DELTARUNE were created by Toby Fox.