Please don't say that. 'spirit animals' are a very sacred religious belief for several native american tribes that are already under persecution, and it's kinda messed up to use it in that context. Consider using fursona, patronus, familiar, avatar, or even Guardian angel. That aside I love your work, love your music!
If I had to guess, I would say that he called him up, asked if he wanted to be a part of this, Brian said yes, and he was on it. Seems pretty obvious really.
HOLY SHIT I USED TO WATCH THIS AS A KID AND I MADE A COMIC ABOUT IT AND I COMPLETELY RIPPED OFF ALL THE JOKES THIS IS HOW I FOUND YOU LIKE A WEEK AGO WHEN I SEARCHED ACTION BUNNIES AND WENT TO REWATCH THEM ALL OMGOMGOMGOGMAIAIAIS
Some real fresh comedy in this! The pills joke was my favourite! Sidebar, I've been watching the Spider-Man cartoon from the 90's over the past few days, theres a character called Michael Morbius who literally sounds like he was voiced by you!
It's great to see this series still going. I was about to say how TomSka was the reason how I found the first video, and here he is in the comments. Lol