Unironically It turns out that Voltboutamon (the fusion of Piemon and Vamdemon) is the undisputed strongest demonic Digimon.
In the next order, a mysterious force from the Dark area called the Malevolent Fist destroyed the demon world and created Voltboutamon as its body.
Voltboutamon was so formidable that it took the combined efforts of The Player (who had defeated Demon Lords and Royal Knights), Omegamon Alter b (who was a threat to the entire multiverse), Beelzemon, and Lucemon FM to barely Challenge him then , It turns out that the Malevolent Fist can make more Voltboutamon anyway.
In comparison, Grandacomon is big bum as he always loses to the Royal Knights and doesn't have a single on-screen win, Bagramon was killed by Algomon, and Lucemon SM has some feats but is still no match.
u/Relevant_Bunch_7868 — 3 days ago