Incredibly Weird Detective has a brother! Immensely Eccentric Investigator is a wolpertinger with a wide variety of prosthetic horns and antlers he likes to swap between, some for special occasions.

Also a tiny bit of lore for the IWD-verse. IWD lives in a demi-plane between worlds called Obscuri-City, which tends to "catch" things that are left behind when universes come to an end. These "Salvaged Concepts" are usually just particularly special objects, but every once in a while, a whole dang person slips in.

-- Transcript --
[Panel 1: Pamlynne, Incredibly Weird Detective, and Immensely Eccentric Investigator are all standing in a line, left-to-right, with I.E.I. looking back towards the other two. I.W.D. is looking up at him with crossed arms.]
I.W.D.: Hey, bro! Are those antelope horns?
I.E.I.: Yeah, I wanted to try somethin' a bit different to the usual antlers today. So, what's up?
[Panel 2: Pamlynne waves as I.W.D. gestures back towards her with his thumb.]
I.W.D.: I'm helping out my new friend, Miss Pamlynne, here.
[Panel 3: I.E.I. has his hands on his hips, a slightly sad look on his face.]
I.E.I.: Ah. Poor thing's a Salvaged Concept, huh?
[Panel 4: Shot of all the characters' bottom halves.]
Pamlynne (Shouting): Wait, I'm a WHAT?
I.E.I.: A Salvaged Concept - something or someone that survives beyond the end of their original universe.
[Panel 5: Reverse shot, with I.E.I. turning away, and I.W.D. turning towards Pamlynne, who is looking at him angrily.]
I.E.I.: Did he not explain that to you?
I.W.D.: ... I was getting to it...