By the way, I absolutely don't agree with Mark over Cecil in these episodes. Cecil is the only one in the show consistently making the most sense.
I completely understand Mark's anger, but I do find myself siding with Cecil, even if he also acted out of line due to his fear of Invincible. Cecil's issue is that he cannot fully trust Mark, even if he trust him far more than his father. I don't think Cecil expects Marks to end up the same way. But he could do something horrible.
I'm mostly baffled by how much venom Mark threw at Darkwing 2. Since he barely had any interaction with the man and he'd only killed criminals. Yeah I know him killing street thugs is immoral. But Mark was throwing him in the same category as Sinclair who joyfully kidnapped, experimented, and murdered innocent people.
You'd think he bring up Darkwing 2's mental problems. Since last season confirmed he hears voices in his head, yet Mark didn't bring that up at all. I feel the big problem Mark and Cecil had was their anger and lack of trust respectively. Mark was getting way too emotional and angry, which was clearly clouding his judgement. Cecil shouldn't have activated the earpiece in this situation. I understand being scared but he still was protected by many ReAnimen and could teleport.
Also, when Cecil made it clear he was terrified of Mark, Mark shouldn't have doubled down on his rage. Yelling at Cecil and stepping closer to him doesn't make him look good. I completely understand why Cecil is scared here. Mark in his rage can easily kill him with the slightest touch, even if it's just an accident.
With hindsight, I can see a few ways Cecil could've salvaged this situation. However, that's only with the hindsight I have as a viewer. If I was in Cecil's shoes I'd be terrified of Mark as well in this moment. He knows Mark is prone to going out of control when he gets too angry. I'd want some kind of protection against him as well.
Trust can only get you so far. People lose control and can do thinks they regret, Mark has done this as well. For a normal person, they get mad and maybe punch or push you. But if Mark does that, it's the end for Cecil. I personally can't say I'd put that much trust in Mark.
Not because I think he's evil, just that he's a normal person who can lose control when enraged. I don't think I would've handle that situation any better than Cecil did. He doesn't have the same hindsight of the situation and about Mark we all do.
What should a scared and vulnerable human do when someone who can rip me apart with his pinky finger is yelling at me? Well, as I said, putting something inside of Mark was going way too far. I think the room itself should've been a trap that played that sound, while Cecil would have ear protection.
Keep that earpiece as an absolute last resort. I feel like the situation didn't deteriorate that much for Cecil to use it. It's very unfortunate. I feel like had the other heroes been there, this situation could've been avoided. They're capable of holding Mark back from doing something by accident, and Mark won't try to kill them.
A verbal argument that still ends with Invincible cutting ties with Cecil is better than what actually happened.