MaloMyotismon, known as BelialVamdemon in the original Japanese version, is the reincarnated and final form of Myotismon. He is the final and true main antagonist of the whole Digimon Adventure 02 (retitled Digimon Season 2 in American releases). Myotismon's spirit possessed Oikawa, who in turn manipulated the Digimon Emperor, in a scheme to regain a physical form. MaloMyotismon also reappeared in the 3rd season of Digimon Fusion, along with his incarnations, Myotismon and VenomMyotismon, created by the evil Quartzmon.
MaloMyotismon is a Mega Level Digimon that resembles a mechanical vampire. He has Myotismon's original head with a modified mask, has two extra mouths, one on each shoulder, a tail with a sharp end, and mechanical wings that can shoot out a deadly mist.
Digimon Adventure 02
Myotismon first appears as a creepy talking mouth speaking with first Yukio Oikawa, and exits his body to appear under a new form, more powerful than ever named MaloMyotismon. After he tortured and killed Arukenimon and Mummymon as well, the Digidestined were afraid to battle him, but Davis wouldn't give up and told the others that they must fight for courage.
ExVeemon then attacked MaloMyotismon, but then the battle was interrupted when MaloMyotismon created illusions for the Digidestined, causing them and their Digimon partners to be separated. Luckily, their Digimon partners told them the illusions weren't real. When Davis, Ken, and the others returned from the illusions, their Digimon partners all took turns battling MaloMyotismon, which made a hole to the Digital World, presumably destroying MaloMyotismon. But however, MaloMyotismon survived the onslaught of the heroic Digimon, and grew bigger and attacked Imperialdramon, Silphymon, and Shakkoumon as payback. MaloMyotismon then used the power of darkness to open up the gate to the real world. Suddenly, several Digimon gathered around to call help to their human partners from all around the world, who suddenly were summoned to the Digital World with the light, blinding MaloMyotismon, causing him to be weakened. The darkness returned to let MaloMyotismon get stronger, but Davis, Yolei, and the children (who were free from the Dark Spores) shared their onslaught of dreams (and didn't feel doubt no more) and used the light from the Digivices, causing MaloMyotismon's body to be disintegrated, revealing himself as a form of a black cloud of darkness. All the Digidestined used their Digivices to create Imperialdramon's ultimate weapon, the Giga Crusher, and finally destroyed MaloMyotismon for good.
Digimon Fusion (season 3)
An army of MaloMyotismon were produced and created by the Quartzmon along with his incarnations, Myotismon and VenomMyotismon. They were all eventually destroyed when Omnimon, ShineGreymon Brust Mode, Gallantmon Crimson Mode, Imperialdramon, Susanoomon, Marcus Daimon and OmegaShoutmon teamed up.
Digimon World Dawn & Dusk
To obtain MaloMyotismon one must DNA Digivolve a Myotismon and Shadramon with the component Digimon being at least level 68 and have 470 of Spirit or more and have Arukenimon in the party.
This Demon Lord type Digimon is said to be the final form of Myotismon. He is different from VenomMyotismon in that, as VenomMyotismon lost his intellect in exchange for excess beast-like powers due to succeeding in acquiring massive amounts of power, MaloMyotismon maintains his intellect, which binds down his lust for power. He has a cruel, spiteful and arrogant nature, and he will resort to anything to ensure his own desires are obtained. He carries the living parasites "Sodom" and "Gomorrah" on his left and right shoulders respectively. His special attack is "Pandæmonium Flame", a super-hot beam launched from Sodom and Gomorrah that exist on his shoulders.
Screaming Darkness (Pandaemonium Flame): Fires an extremely high-temperature beam of darkness from Sodom and Gomorrah.
Crimson Mist (Melting Blood): Opens up the jaw-like cannons on his shoulders and spews out a thick red, acidic mist.
Actually, you can call me MaloMyotismon!
~ MaloMyotismon, upon transforming from a duplicate of Oikawa
I just did what she was thinking. Now really, is that so wrong? IS IT?!
~ MaloMyotismon, responding to Mummymon's question of what he did to Arukenimon, and then asking Arukenimon whether it was wrong or not
I love this game. So tell me, what do you think I should do next? Think hard, now.
~ MaloMyotismon, while torturing Arukenimon
What next? What should I do? Show me what you fear. (Arukenimon: Please! NO! NOT THAT!) Very well.
~ MaloMyotismon, while torturing Arukenimon some more
I'm afraid she's gone to pieces. All I did was grant her her wish to get as far away from me as possible. Well, she'll never be near me again.
~ MaloMyotismon telling Mummymon what he claims to be how he destroyed Arukenimon
You can't hide your fears either. You think you don't stand a chance against me, and you know what? You're right. You don't. (Mummymon: You don't scare me! You've taken away my Arukenimon, and now I'm going to make you pay for what you did to her!) Hah. What do you plan to do, wrap me in another useless Snake Bandage? You scare me even less than these DigiDestined fools from the other world. (Mummymon: Then I will teach you to fear me!!) Playtime is over. Crimson Mist!
~ MaloMyotismon's response to Mummymon's attempt to make him suffer for destroying Arukenimon in front of him
I'm curious to know why my Mind Illusion was ineffective against you. How can it be that you have no insecurities or unhappinesses for it to feed off of? (Davis: What do I have to worry about? I have my friends, my family, and a Digimon. Plus, some guy with a letter opener on his face trying to kill me. I'm happy to say I don't have any problems!) Impossible. There isn't a single child in the world that doesn't have something they're worried about!
~ MaloMyotismon realizing how Davis managed to resist his Mental Illusion because he doesn't have any problems in the world
Oops, I think I broke your friends!
You foolish DigiDestined, watch closely now. Your world is being consumed by eternal night!
~ MaloMyotismon, to the DigiDestined
No! This can't be happening! Those paltry children can't make me disappear! I won't allow it!!
~ MaloMyotismon's last words, which is also Myotismon's final words before he was destroyed for the final tine
The names of the two living cannon-like parasites on MaloMyotismon's shoulders comes from the Biblical twin cities of Sodom and Gomorrah known for the wickedness and destruction of their inhabitants.
MaloMyotismon's tail resembles that of a xenomorph. Indeed, he even makes a similar stabbing motion with it during his torture of Arukenimon.
MaloMyotismon shares similarities with Zorc Necrophades. For example, they are both possessors (a part of Zorc's soul forms Yami Bakura after combining with the soul of Thief King Bakura and later possessed Ryo Bakura) and show their true form at the very end of the story.
In the overall story of Digimon Adventure 02, MaloMyotismon is the principal antagonist, Yukio Oikawa is secondary, Arukenimon and Mummymon are tertiary, and the Digimon Emperor is quaternary.