This. Also
this. And
this.
Those are the things I've specifically called out, but there's plenty more you can see for yourself. I find his general behavior to be shifty. So willing to die for us, yet so adamant that it has to happen on Day Three. I can't wait to hear the excuse he has then.
It doesn't have to be Coppa today. If someone else has a better argument for possible scum, I'm willing to hear it. But I don't feel that Blarg is a threat to us so I'm not willing to waste our strongest power on him.