This thread contains characters that aren’t possible to get added in DHBM due to license or other issues
Impossible
- Bing Bong
- Mr. Potato Head
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- Barbie, Ken, Mrs. Potato Head, and several other Toys
- Mary Poppins (and other characters in both movies)
- Tarzan (movie) characters
- Gravity Falls characters
- Giant characters
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- Examples: Tamatoa
- Tiny characters within existing IPs in the game (where are ‘‘normal/big-sized’’ characters like humans)
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- Examples: Ray
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- They can still be available as a summon/tied
- Dead characters in existing IPs in the game
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- Examples: Ellie Fredricksen
- Cars characters
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- Not fitting for the battlefield(game) as stated by PB
- Disney Junior characters
- Star Wars characters
- Marvel characters
- Disney Park(s) characters
- Disney Comics characters
- High School Musical
Questionable (Im)possible
- 20th Century Studios
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- Blue Sky
- Examples: Ice Age, The Simpsons, Anastasia
- Edna Mode
With the cheese badge (Wimpy Diary) Blue Sky is more likely to be included.
Already in-game summons/Can’t be added as solo hero
- Gramma Tala (tied with Moana)
Zeus (tied with Hercules)- Tinkerbell and other pixies (tied with Peter Pan)
- Pluto (tied with Minnie)
- Morph (tied with Jim)
- Dug (tied with Carl)
- Meeko and Flit (tied with Pocahontas)
- Djali (tied with Esmeralda)
- Rufus (tied with Ron)
- Cauldron Born (tied with Horned King)
- The Nicelanders are tied with Felix.
- Carpet is tied with Aladdin.
- Megabot is tied with Hiro.
- Mickey Mouse can glitch to Steamboat Willie and Sorcerer Mickey.
- Billy, Goat and Gruff are tied with Bo Peep.
- Rajah is tied with Jasmine.
- Terror Teddy, Mr. History and Mr. Banana-Brain are tied with Quackerjack.
- Billy Butcherson is tied with Sarah Sanderson.
- Zipper is tied with Chip and Dale.
- Thumper the grasshopper is tied with Hopper.
- Flora, Fauna and Merryweather are tied with Princess Aurora.
- The Stabbington Brothers are tied with Mother Gothel.
This list might not be complete, so if someone wants to help they are welcome 
