I see a lot of people still confused about this, so here it is straight from the horses mouth!
Yes! These are cheeky little references to the indie cartoons Lackadaisy and Far Fretched, respectively.
Wack A Daisy should be a self-evident joke. Rocky and Freckles' colors are swapped for extra funnies (and copywrite skirting~)
Hell Puppy was the original title for Far Fetched, so we thought it would he funnier to use that instead of trying to wrack our brains trying to find an inverse of "farfetched" lol
We snuck Caine from The Amazing Digital Circus on a poster in Shrike's room, as well~ (dual wielding his iconic™ guns)
I implore everyone to watch Monkey Wrench on YT / Newgrounds! It's such a charming show and the whole team has been cranking out stellar work for it! 🐒🔧