Mark`s reaction over gathering with his father was great, he really fells what happened and Nolan can`t help it. Trough the epissode we get to se how Nolan struggles because his time on Earth made him change his Viltrumites ways, but at the same time he knows he is betarying the Empire.
Those are the kind of situations that helps to develop a lot into characters get on things.
Even Andressa, when talking about Nolan, higlights ‘loving’ as one of him virtues, that really shows the other Nolan face, the ways he learned on Earth.

The Viltrumite fight made me wonder about how easily those defeated Allen but can`t hurt Invincible in the same way besides they don`t hold nothing back.
Viltrumites are to this point the most strongest characters in the show. No doubt.

Also, some scenes fells like reading a comic.

Now Nolan warning his son about the danger of the fight… after both father and son figthed on Earth, the hybrid should realize the threath the Viltrumites are, but in the other hand, Invincible didn`t figthed strongest enemies recently, may be the Atlantis creature was the last time he need to push his powers to the limit.

At least, he could managed against Thula.
And Nolan… he brutalized Vidor in a way that remembers he killing Red-Rush.

The way how Nolan brutally hurts Thula and Luncan but didn`t killed them is due to his struggles regarding his betrayal… he didn`t dare to kill any Viltrumites, at the same time he didn`t dare to take over his son planet. He have no wat to go, but chooses to die in the Viltrumite law.

Leading the end, we get to see General Kregg and he points Mark as the new Viltrumite agent on Earth, but the explicit way as he say it… “kill a few humans, make them surrender or we will kill thousands”, I wonder how the show will manage this.

I don`t get one only thing regarding the epissode, and is how Donald background would fit in this context. I mean, I like the drama in the serie, and also the character development, but may be the “meanwhile on Earth” should be something bigger than Donald getting into what happened to him.

For example, Eve struggling with her puting more lifes in danger when using her powers in a few runs is a great arc to develop her character, even a darkest way to do it.
The Debbie reunion with other superhero widowers also was great, but for much that the GDA lore hypes me a lot as comic reader, I don`t understand how those Donald scenes would fit within the pace of this episode.