(note: I don’t actually mean headcanon but I personally think these voices suit them)
Bloo: similar to Clarence.
Elder: basically a gothic girl but with anger issues.
Orange: Patrick Star but constantly saying “durrr”.
Albin: no specific voice, but in dragon form his roar is similar to a mix of Rodan and a Night Fury.
Coco: childish voice.. duh.
Kobe: (okay lol this is easy, just take a stereotypical edgy teen voice and give it a Russian accent and make it 100x more demonic in demon form despite that form not talking too much and just roaring)
Baranka: her voice is pretty normal.
Lux: Wheatley but with a demonic voice.. or should I say it’s similar to Flowey saying “That’s a wonderful idea!” but lower pitched.
Sparky: his roars in his giant form are similar to King Ghidorah (the old one, not the 2019 one) but his actual voice is whatever this pink furby sounds like..: https://youtu.be/nLfTEPmnaNM
Turk: (I first thought of Dooble from Two More Eggs but nope, just make him sound normal and I guess make him sound like he’s underwater, similar to Zap from Skylanders)
Reddy: again, no specific voice.
Hex: kinda Russian voice, but he loses his accent when corrupted.
Goldentooth: “YAAAARRRR! WHERE IS THEE PIRATE BOOTY WHEN YER NEED IT?”
Leafy: it’s similar to Wyldstyle or Jailbreak (I’m sorry-), but the way she talks is similar to Sapphira from Eragon, with her roars being just random dragon noises but with a mix of Mothra in it.
Octa: Emotionless British Person, but can sometimes show some actual emotions.
Cryo: cute anime girl voice.. oh god no.
Halogon: Talking Parrot.
Demogon: can’t speak, but just howls like a wolf for some reason.
Crush: it’s similar to Puffball from BFDI.
Yuanjian: can’t speak, but the roars are similar to Rayquaza except your GBA or DS/3DS is constantly glitching.
Mucky: *splish sploosh noises*
Bromo: your typical dragon roar, but if he was constantly speaking then it would be similar to Smaug.
