Avatars were added in Beta 18.1 to promote Undercards' new UCP Currency, as these are only able to be bought with UCP.
Avatars are just for show, able to be seen next to your name anywhere: In the Home Menu, on your profile page, your profile page in the chat and in battle. Various items and characters from Undertale are shown on these, most of which look slightly or completely different from their card counterpart. Some also just have their head shown, like the face images main characters have in their dialogue box in Undertale.
There are quite a few similarities between Avatars and Cards:
- There are the 5 main Rarities of Common, Rare, Epic, Legendary and Determination.
- Note: There were no Determination Avatars on release.
- Each Avatar of the same Rarity costs the same amount of UCP, with 1 exception.
- The higher the Rarity, the more UCP they cost to get.
- Common: 0 UCP (You own them all from the start.)
- Rare: 75 UCP
- Epic: 150 UCP (Normal) | 200 UCP (Animated)
- Legendary: 250 UCP (Normal) | 350 UCP (Animated)
- Jacky Bunny's Avatars: 350 UCP
- Determination: 375 UCP
- The original Common, Rare and Epic Avatars were colourless.
As of April 2019, there's a special Avatar with a rainbow border, called Mythic, that can be obtained in a bundle with a related Card- and Profile Skin when buying an Epic+ Contributor Pack. This bundle changes every month. Replaced by Pass Quests after 5 months (since September).
During July 2019, another Mythic Avatar with matching Card and Profile Skins became available. These, however, can't be bought. Instead, they are obtainable based on the total amount of real money you've spent on the game. The Card Skin is unlocked after spending €100. After another €100, you unlock the Profile Skin, too. And after yet another €100, meaning you've spent a total of €300 or more, you've unlocked the Avatar, giving you access to all 3 skin types.
September 2019 gave us Pass Quests instead of a UCP Pack Bonus. For 450 UCP, you can unlock these and will earn you Bundle Pieces by clearing Seasonal Quests, which were also introduced at this point.
During May 2020, Bundles were re-added, but now feature a Cosmetic Skin of multiple types for a single payment of UCP. This lasts for a limited time, afterwards a new Bundle will take its place and the old Bundle will be added to the regular Shops (but the total UCP cost will be higher):
- Card Frame; (Originally styled after Undertale, changed to Deltarune in Beta 42.0, given the option to switch between the two in Beta 42.1, and added one for Contributors in Beta 45.0. Being added in Beta 46.1, this is the 2nd buyable and 4th overall Frame Skin, after its introduction January 2020. It is unknown if these are obtainable after a new Bundle takes its place.)
- Profile; (With the first instance of, when used, also gives a corresponding Background for the user as well as spectators viewing from the user's perspective. The Profile Skin and Background Skin can't be bought or used seperately and only requires to buy the Profile Skin. Custom Background Music may also apply. If not, Background Music from the normal selection of Backgrounds will play.)
- Card Skins & Avatars. (Given to a number of monsters with a similar theme and may synergize with each other. Unlike all other Cosmetic Collections of the sort, these aren't given the Mythic Rarity nor are made by Jacky Bunny.)
The current Bundle is Spider Party.
6 of Spades, A Cool Snake, Absorb the Artifact, After the Concert, All in One, Allergic Reaction, Annoying Dog, Apocad, Awkward So Sorry, Bag on Tail, Barbecue Pyrope, Beggining Flowey, Best Dad, Beware of Legs, Blaster Power, Blue Doubt, Blushing Society, Bone Chilling Winter, Bush of Doom, Butterfly Attack, Cactus, Calm Dummy, Cease your Taunts, Chalk Doodlebog, Chaothic Change, Clean Smile, Completely Hidden, Confronting Elegance, Coolest Glyde, Corrupted Big Bob, Cozy Bear, Crosshair, Cruel Fate Everyman, Cultured Hamster, Cute and Annoying, Dark Menace, Death by Butterflies, Deep Meaning, Diamond Baby, Disco, Dog Brothers, Dreemurrs Pie, Drill Time, Early in the Morning, Eggcelent Learning Partner, Eggs for Everyone, Everyman, Fear the Worm, Fetch, Final Encounter, Flex Time, Flight, Flying Starwalker Bird, Freezing Cold Fridge, Freezing Dogs, Froggit Golden Hit, Frozen Lamp, Future Warning, Game Arena, Get Well Soon (2x), Getting Lost, Golden Pile, Gottem, Green Hearts, Grim Bird, Happy Ghost, Happy Vulkin, Heck Yeah, Hes Watching, Hi Im Bob, Hidden Human, Hippity Hoppity, I Diagnose you with Death, Increasing Rage, Intrigued Fox Head, Its Hot in Here, Just a Normal Kid, Just Checking, Karmic Retribution, Killer Cake, Late at night, Lemon Cake, Lesser Dog, Like the Cool Kids, Locked On Whimsun, Long Dog, Lost in Thought, Lover Plane, Manticore Break, Memory Sink, Menacing Worms, Metta Minions, Mini Frog, Mini Round, Minion Eater, Move or Die, MTTs Brand New Eggs, -Flour, -Milk, One Turn Flush, Out of Order, Pain, Panic Pollutant Gas, Pay for your Sins, Perfect Fountain, Perishing Souls, Plan B, Ponman Guardian, Preparing Burger Bush, Purest Seed, Purple Performance, Quiet Blizzard, Ragel, Ranger Danger, Reader Librarian, Red Anxiety, Red Blossom, Refreshing Water, Ribbit, Sacred Place, Sad Forest Worm, Shhhhhhh, Shooting Off Hearts, Sick Temmie, Singing River Person, Sleeping Froggit, Slide Time, Small but Tough, Snaky Situation, Snow Bunny Friend, Snowdoggo, Spade Storm, Squawking in Grillbys, Stay Still, Still Waiting, Strong Legs, Surf Time, Surprised Snowdrake, Swap Time, Tail Wags, Tasty Puzzle, Tem Gathering, Tem Proud Parent, Temmie, The Crown, The Cure, Thinking Berdly, Time to Hop, Timid Mouse, Too Cold, Too Good For This, Totally Vulnerable, Tree, Tricky Box, Triple Froggits, Two Memories, Want Tem Flakes, Watching you, Waterfall Garbage, Wind Mayhem, Winter Days, Worm Generator, Yellow Careless, You Designed It, Your Lucky Day.
1 Damage, A Welcoming Smile, According to Plan, Alphys, Asriel Dreemurr, Bad Girl, Brothers (2x), Buy my Junk Food, Chaos Saber Asriel, Choose One, Cinnamon Roll, Cooking Teacher, Cool Papyrus, Curved Round, Cute Star, Dark Darker, Darkest of Kings, Demon in Disguise, Dogs Possession, Fishy Dreams, Flower Goat, Flowers Bloom, Follower Kid, Friends until the end, Frisk Determination, Frisk Goes Boom (2x), Gaster Blaster, Glyde Takes a Bite, Goat Power, Green Flame, Guard Dogamy, Guard Dogaressa, Happy Goat, Hats Off, High School Noelle, Hoi!!, Hot Sugar, Hyper Goner, Its Show Time (GIF), Kawaii Gaster Blaster, Leader Susie, Let Him Rest, Little Monster, Little Pet, Made for Knowledge, Mauve Amethyst Wine, Mercyful Child, Message from the Void, Nice Cream Vendor, Nobody Can Stop Him, Nyan Mad Mew Mew, Packs Dealer, Power of NEO, Rabbit Host, Reading Toriel, Ready for Chaos, Ready to Thrash, Red Knife, Rewind, Rough Fish, Sad DJ, Sad Tea, See You, Smile and Silence, Snowdin Snow Storm, Snowdin Town Baby, Soul Check, Spider Dance, Spider Food, Stand and Fight, Star Spamming, Staring Contest, Staring Goner Kid, Starlight, Stay Determined, Sunset Asgore, Survive This, Swheat Heart, Switch (2x), Teasing Frisk, Tem is Ready (GIF), The Man Behind the Mascot, Thinking Drake, This is fine, Timid Asriel, Too Sensitive, Toxic, Ultimate Recipe, United Final Charge, Very Interesting, Waterfall Echoes, Woofenstein, Yellow Cutie.
- Vaporwave (1000 UCP): Lovable, Hollow, Isolate.
- Summer Pack (1600 UCP): Fruity Hat.
- Spider Party (2000 UCP): A Flower for you, A Letter for you, Spider Love, What is it this time, Spider Decorated Croissant, Spider Frosted Donut, A Spiders home.
Angry Sans, Best Employee, Besties!, Bright Smile, Captured Soul, Chaos Saber, Chilling Susie, Christmas Noelle, Cloud Nine, Colored Sparks God, Cool Dude, Cool Skeleton 95, Cry Baby of Death, Cute Dictator, Cute Mew Mew, Dark Prince, Defensive Susie, Despite Everything, Determination, Drunk Bunny, Everlasting Memories, Fight Me, Fighting Papyrus, Final Attack (2x), Final Warning, Fish Idol, Foolish, Fox Child, Frisk Multi Shot, Furry Sans, Get Dunked On, Gifting Time (GIF), Glamorous Time (GIF), Glitched Gaster, Glowing Ralsei, Goat Mama, God of Hyperdeath, Golden Flower, Golden Garden, Golden Tears, Green Bad Girl, Greetings from Waterfall, Gyftrot Little Nap Time (GIF), Hackergoat, Happy Nacarat Jester, Happy Nerd, Hardest Puzzle, Hawaii Dancer, Healing Field, Hey-yo Westerberg, Hopes and Dreams, Hot Barman, Hyped Catty, Ice Cream Time, Jesus Duck, Justice, Kawaii Onion, Knife Throw (GIF), Last One Standing, Little Bad Guy, Lovely Mew Mew, Man of Fire, Mini Rider Sans, No Mercy, Noelle joins the Team, Noodles, Nyehehe, Old Turtle, Onion Check, Opera Mode, Out of my Mind, Photoshop Flowey, Possesed Kris, Prophet, Ready To Fight, Sad Lost Sans (GIF), Santa's Secret, Sea Goddess, Shopping Time, Singer Fish, So Cool, Spear of Justice, Spell Caster Ralsei, Standing Rouxls Kaard, Summer Undyne, Sun Goddess Toriel, Super Star, Tea Time, Tem Shop, The Adventures of the Annoying Dog, The Carrier, The Sheriff, Treat or Trick Time, Try Harder, TV Star, Vampyrus (2x), Void, Whaaat, Wolf Child, Yellow Flowers Chara, Your Best Friend.
- Summer Pack (1600 UCP): Fun Time (GIF), Clover on the Beach, Jerry on the Beach.
- Holy War (1000 UCP): Flavor Savior (GIF), Saint of War (GIF), Holy Knight (GIF).
- Spider Party (2000 UCP): Welcome to the Bakery, Muffin Top, Party Muffet.
Big Eyes Chara, Control, Dark Knight, Erase, Flirt, Happy Chara, Krispy Soul Dinner, Partner, Pianist Chara, Save, Spiteful Angel, The Hero, Together Forever, True Hero, Universal Destruction, Your Worst Nightmare.
- Darkest King. (Pass Quest Rewards)
- Golden Muffet. (Rewards for every €100 spent: Card -> Profile -> Avatar).
Young Toriel, Hyper Death Attack, Chara's Rush, Fish Goddess, Amalgamate Creator, Souls Collection, Love Knight, Ketchup Sans, Yellow Frisk, Kawaii Mew Mew, Hero of Humanity, Little Devil, Flower God, Robot Star, Final Cry, NEO Hope, Crazy Lancer, Gem Specialist.
April Fools (4)
Note: Lancer Boi and Sexy Fish were originally Legendary, while Delete This Ralsei was the only Generated Avatar, being rewarded for completing all Quests during April Fools 2019's 'Fish Week'. April Fools 2020 added Number One as another Legendary, but when the others were made available in the Shop again, DTR was with them and made a Legendary. Soon after, it became Generated again, but this was now also applied to the other 3 Skins. (They all stayed available in the Shop.)