After seeing the short ironically named 'HELLUVA SHORTS', I was immediately got the inspiration of creating a short story within the main story. Though, this will be short as it only serves as an introduction. Anyway, let's get onto it.
Caboose's Shorts
One
Introduction
Caboose and Charlie stood in the main room and looked to as if they were being watched. "Hello there! Caboose introduces himself to the audiences. "My name's Caboose. You possibly know me from the popular web series, Red vs Blue!"
"And I'm Charlie Morningstar from another popular series, Hazbin Hotel!" The Princess of Hell greeted. "Today, we're going to talk about something that is really important."
"Yes. Since the Writer of Caboose's Guide to make Friends in Hell cannot incorporate certain characters into the main story, he decided to settle it by making a side story." Caboose explained.
"That's not all," Charlie pointed out as the blue idiot forgot one more detail. "This will serve to look at how Caboose had affected Hell."
"it was totally neat." The Blue idiot commented. "I wonder what can occur when I help your people, Carlos."
"Qué carajo están haciendo ustedes dos!?" Both Caboose and Charlie turned to look at Vaggie entering the room with a confused look on her face.
"Oh, hey Baggie! We're introducing the audience to the side story!" Caboose informed her as he pointed at...a blank space.
The one-eyed woman look to where he his finger was pointing towards that only got her more confused. "What audience? Because by the looks of it, you two are talking to your imaginations!"
It soon dawned on them that she doesn't exactly have the same foresight. Her girlfriend looked at her before facing towards the camera to end the episode. "Anyway, I think this is a better send off for now. Make sure you all stayed tuned in your notifications to find out more episodes that are connected to the main story."
"Or not! Because there are also some PSAs and omakes!" Caboose added enthusiastically. "You are all going to enjoy it I promise."
Vaggie felt a headache coming and she really needed to have a few drinks. Though, before she could even do that... "By the way, Baggie. I think you're going to enjoy a video this fan commissioned for 50k!"
And that caught he by surprise upon hearing that from Caboose. "What!?"
Yeah, I purposely added that reference to get a few laughs.
Anyway, I hope this sidestory could serve to tell other characters' perspectives before, during, and after their encounter with the titcular blue idiot.
What side stories can you see happening?
There is going to be things that are canon and non-canon through forms of omakes, and PSAs.