Agumon was quite happy to see AI when he got to him, but being a commander, he had to keep a straight face as he slowly stood up using AI as a sort of standing block before he offer a reply to what he had said "No, now is not the time to be pranking them. Let's just get out of here for now, General Bloodwolf probably going to be a lot angrier when he finds out that three humans are now dead, I don't know how the Emperor going to react though".

Agumon then used used AI as someone to help him walk at least until they were back with the army.
--
It was a strange sense of both satisfaction and worry as Mike watched Lucemon be caught off guard by the news, that one of the Digidestained had been killed. It was satifying since Mike did not trust Lucemon and his always calm personality and seeing that break in any way was fun but it became worry as the situation became clearer. 
Much like Ty, Mike believe that if they died in this world they would just be thrown back into the real world. With Lucemon reviling that, that was not the case, caused Mike to realise that, he was treating this world like a game that he could manipulate with his skills, now he knew he was truly real in this digital world, he would have to be a lot more smarter and aware of everything.
He felt sorry for Ty but did not know how to console him about this, after the death of his grandparents, he had thrown himself into his computer work to deal with his grief, just before he heard Lucemon question, he said, mostly to himself though Lucemon and Wolfy would hear him "I wish Sashia was here, she knew the right things to say and do in situations like this"

He then looked at Lucemon as he asked him a question and then mentioned about a court Marshall. "I have issued a full scale retreat but Falconmon and Tentomon are going to keep watching the remaining members of the Digidestained from the sky, avoiding any and all conflicts until they reach their next location"