Oblivion, Empty Hand, Pralaya, Griever at End of All Things (GEAT), The Gentry, The Black Winter and others.

They all seem to tightly related.

• GEAT and Oblivion: The GEAT's purpose is to witness the last light fade from the edge of Eternity. This motivation aligns with Oblivion who on multiple occasions tries to bring Eternity's death.

• Oblivion and Pralaya: Pralaya is the Embodiment of Nothingness, The Goddess of The Void, and is Non-Existence itself, the emptiness from which the entire Multiverse is born, and to which it always returns. Her desire is to end all of existence. This is exactly Oblivion who rules the Void, is the embodiment of nothingness and non-existence and he said the Multiverse is born from him and returns back into his being.

• The Gentry, Empty Hand and Oblivion: The Gentry was capable of consuming and creating Ultra Comics and even consumed us as the reader and was a meta-concept above the real world. Oblivion stated himself that HE could also kill us and the real world. The Gentry, who led by the Empty Hand, are creating a device LITERALLY CALLED the Oblivion Machine. And I'm pretty sure the Dark Monitor was an underling of the Gentry who wanted to destroy creation as well.

• As for the Black Winter we barely have information on it but inference allows us to believe it destroyed the DC Multiverse and will destroy the Marvel Multiverse unless Thor and Galactus stop it (which I don't think will happen).

• Side Note: The Oblivion is also the paper the writer draws upon, which in DC is called Monitor-Mind the Overvoid (also note it's called the overVOID like how Oblivion is above and 'over' the 'void').

• Other side note: Eternity (currently, he is the 8th Multiverse and encompasses the Far Shore, which is the void of non-existence --> perfectly describes Oblivion), Nyx (she predates creation as it's darkness before light just like Oblivion, wanted to create a dark multiverse and takes inspiration from the mythological character Nyx who spawned all of existence and that the mythological Chaos (Oblivion) never existed), One Below All (who is said by the writer to be the opposite of TOAA and like TOAA transcends Eternity etc. TOBA transcends the dark side, like Oblivion and Mephisto etc. He is also Marvel's version of the Great Evil Beast is literally darkness and can destroy Creation similarly to Oblivion. However TOAA has also been stated to be beyond Oblivion and was the author of everything including Oblivion. Above All Others exists beyond creation and couldn't stop Thanos who basically absorbed every cosmic entity in the multiverse), divine creator (contains Oblivion and empowers it and transcends Oblivion like he transcends Creation), perpetua (also created a dark multiverse, ripped parts of the Monitor-Mind the Overvoid and Brainiac used her power to break the Source Wall. Brainiac's "true form" i.e. Convergence Brainiac looks a LOT like the Black Winter and has the power to destroy all reality and the multiverse just like Oblivion can cause a cosmic catastrophe if he entered the 7th Multiverse Eternity)

• Last point: Oversoul spectre (The Presence's Vengeance) merged with the void beyond all voids (so a void beyond "Oblivion" and Pralaya) and was connected to Logoz, similar to Marvel's Logos who murdered the LT and was manipulated by the FF who was the first Multiverse.

I'm sure there are more connections but that would take far far too long.

P.S. Mother Night: She exists beyond creation and is devoid of time, space, thoughts, info, any other definition like Oblivion.