They all live in a haunted mansion which can be accessed only by powerful magicians which have a link to them.
a.k.a. Dyerre.
Spyne: Spiritual demon, kind, caring, can become solid, and has immense power, doubled by his immense size the original member of the family.
Syagop: Energetic, kind, mature, and generally awesome, colorful too, has strong physical kicks, and a great melee fighter. no arms though. also a original member, albeit still the next to youngest.
Jubjuby: Protective caretaker in the family. can kill everyone except for immensely powerful magi in a single spell (one by one) if he felt like it. talks about being a "gnome" in the world of "azeroth" in his past.
Neon-Draggy: youngest family member, can summon and control "photons" basically, he can create and bend lazors, to make lazer swords, beams, etc. apparently lived in the universe of a game people know as "kirby"
Dobago: a rage bob-omb. cannot explode, but can do very powerful attacks and run immensely fast when his rope's on fire.

Original biography:
Spyne was: Spikewood, the evil small demon, with his body placed in a teddy bear, filled with anger and pure evil.
Syagop was:Dyerre, yeah, that was the old me. but now has more horns, no arms and no wings.
Jubjuby was: jubjuby. a human, had only a polearm in the past, human sized, snake eyes with black slits and purple outsides, mini floating anime devil wings, long white hair and a long red simple robe.
Neon-draggy was: neon shark, a kirby sized being with a shark suit on which had lasers projecting as blades from armfins, headfin and tailfin.
Dobago was: dobago, a bob-omb with a eastern straw hat, wheels in his feet, and a supertitanium shell.

all character © me