no, because that’s not the definition of serial killer.

simply put: where is the “serial” part in Omni-Mans actions ?

It’s because of a weird invention called “timezone”.

Netflix releases always at Midnight PST (= 8:00 UST)
Amazon releases always at midnight UST, so in the US it’s the evening before the day Amazon mentions.
Example: Invincible gets released on Friday at Midnight UST => 7 P.M. on Thursday in New York.

it must be that way.
You need just to remember the scenes where Nolan entered the house at daylight to the front door fully dressed as OmniMan. That most likely happened regularly.
Then they have for sure seen Mark growing up, and Debbie as well.
Most likely they even talked at some point . So they must have known that Omniman lives there - and obviously Invincible is his son.
So it’s either Cecils people around that house - or the neighbors are other super powered people.

However, I wonder how Wiliam did not realize the connection between Omniman and Mark way earlier.
As a good friend of Mark he most likely visited him regularly - and he never saw Marks dad dressed as Omniman ?

It’s pretty obvious.
By portraying him that unsympathic is the best way to understand why Eve doesn’t want to live at home and how it shapes her character - probably not even in a good way-.

By the end of the episode it seems the leader of the coalition is the mole.
And considering the fact that he was already of old age when Allan was born and he is STILL the leader I guess he is a very old Viltrumite, especially since he looks very humanoid and has a mustache + some extra facial hair.
Probably he’s even the one where Allan got his power from (maybe he is even his father, technically speaking ?), why else would Allan have so similar powers ?

In case he is really a Viltrumite than it’s obvious that the coalition of planets is already part of the Viltrum empire. The people are just not aware of it.
So - why attacking a planet that’s part of their own empire ? It seems as long as they don’t actively rebel of fight, the Viltrumites don’t intervene.
Maybe the new members which got attacked TRIED to fight, so an intervention was needed?

Maybe because he needs to know basic things and how stuff is connected ?

We saw in episode 2 with Eve what happens when you do not work on code and don’t know enough.
Best intentions aren’t helpful if you don’t know how things are connected.

If I remember correctly, Omni-man wasn’t even pretty happy about the fact that Mark got his powers, as if he wanted that this moment never happened.

What if Omni-Man actually wanted to live a peaceful life - and with him being the only Viltrumite on Earth as their protector.
Probably he wasn’t even officially on Earth, maybe he was hiding there.
The moment Mark got his power may ruined his plans of a peaceful life knowing that Mark sooner and later would fly to space and meet other Viltrumites which for sure would not accept him at all as an interspecies inbreed which for sure would also backfire to Omni-Man as well.
To not look as traitor he had to do what Viltrumites usually do and give at least the impression he’s working for the Viltrum empire so they leave him alone.

It might have even worked if Allen had not told others about the Earth situation.

Somehow I have a very bad feeling about her storyline.
Her whole life has been put upside down, her reality bubble did burst.
She gets rejected, noone actually understands her, instead she’s even getting (parts of) the blame. Mark has gone now as well.

That’s unfortunately the perfect mix for a complete breakdown or the trigger to stop giving sh*t about anyone and anything.
I would not be surprised if she turns evil or at least starts to agree to the distorted view of peace the Viltrumites are propagating.

I wonder if the Atom Eve special happened because we barely see her in season 2.
So far Eve was only in 1 of 3 episodes of this season :(

I wonder how much time has actually passed by since Omni Man left Earth.
It’s because it looks like he’s already Monarch for quite a while on that planet, so I doubt that this is actually “our” Omni Man.

Since Seance Dog talked about multiple dimensions and the whole season is about the multiverse - and in this episode this was the only reference to it - I guess, they travelled to a different dimension where Omni Man is actually good…