Boss Demon Hatred AEOD Edition 4: DBT Pet vs. Sebastian Krist

AEOD 5 is here, to make for a fourth outing!
Thanks to the new additions to the immense AEons Of Death mod, new battles can be had! In this here fight, we see a Korax-based boss with the summon "fdbtpet" or DBT Pet, facing off against Sebastian Krist, from Rise Of The Triad (newcomers to the mod).
First off, the DBT Pet is a very powerful Spider-Mastermind class monster with 11,000 hitpoints. That's a spicy meatball. His attacks involve a lot of fireballs, and what seems to be the thing exploding into a lot of (perhaps damaging) sparks. He's slow, though, so he has a huge disadvantage.
Sebastian Krist, a boss from Apogee's 'Rise Of The Triad', packs a lot of heat as well. He has 10,279 hitpoints, so he can take a beating. He doesn't have any visible weapons on his chair, but he shoots rockets, ground-crawler explosives, napalm shots, and various other attacks. He doesn't attack a lot, but they appear to be very powerful. To make up for his relative lack of mobility with his chair, he will dash forward with it. It is not known yet if this does damage if it were to connect with a target, or the player.
Good luck, newcomers.

[@unjustchimp]

Masta O' Puppets! Nice!

[@Mythosician06]

@Chinelin I already did that in a previous video, but with 16 monsters. Didn't seem to do a speck of damage anyway.