It is a fusion between The Dark F and Albedo from the game, Ben 10: Way Big’s True Story. It consists of Dark Albedo being defeated by Ben and turned into his ghost form with little miss bossy sucking him in to make her fully complete.
strategy:
way big has to knock down little miss Bossy’s 1000 HP, then Dark Albedo will revive Miss bossy turning her into an ultimate form similar to how way big did in ultimate alien. Way big has to punch ultimate little miss bossy’s in order to release Dark Albedo and suck him in but if miss bossy sucks him in back, you have to redo the process again.
Dark Albedo will become giant sized inside of way big. Dark Albedo consists of the ultimatrix, the dark F core located on top of his head and his legs. They have to deal with Dark Albedo before dealing with the Dark F core before it revives Dark Albedo and goes back inside of little miss bossy to repeat the process again.
After dark Albedo is defeated, way big punches little miss bossy and kills her and after dark albedo died inside of way big, albedo was dead forever.
appearance:
It resembles ultimate albedo but with long red arms and legs with a red piece of electricity with the Dark F attached to his head and has the letter F on his face and has the ultimatrix symbol on his forehead.
trivia:
It is the third final boss which has an attack of swinging an object around in circles, first being muscle nixel’s soul, and second being Ultimate Gurggle.
this mark’s albedo’s final appearance and death meaning Albedo will never be in future projects anymore.
the dark f core was similar to tentacle nixel’s spirit form in superstar adventures, as they were both the main antagonist turned into their undead forms and fused with way big’s instance to create twisted versions of way big and died inside way big as well.
It is a parody on the dark star core from Mario and Luigi: Bowser’s Inside Story.
Full look.