I spawn my very first Vermivorous the Invincible!..... as well as my second....
I was using the difficulty slider to get the first one to spawn, but after the first one spawned I lowered it to 1 Player. So 1 is 4 Player difficulty and the other is 1 Player (it spawned before Tactora joined).
Also, My microphone autmatically lowered itself during the fight. Sorry about that.