If I bring this thing to the fight, won't the instructor get mad?

In Gregory Blackwell's office.

"Sorry, I was delayed due to an urgent meeting," Gregory Blackwell explained to Blaze Morrow and his companion, having arrived a bit late. "We just received news that a new demon god was born in the Abyss, but don't worry, it's been handled."

The two Battle Chiefs stood like students in front of him. Blaze Morrow respectfully said, "Professor Gregory, if you're busy, we can come back another day. My condition isn't serious; it's not urgent."

"It's fine, you're already here, I wouldn't want you to have made the trip for nothing."

Gregory Blackwell turned to Bob, "You're Bob Emberclad, right? If I remember correctly, you were the second one in your class to become a Battle Chief."

Bob Emberclad blushed and nodded, "Professor Gregory, you remembered correctly." 

Being remembered by Professor Gregory was an honor. In fact, Professor Gregory remembered the name of every student.