‘Neusus’ doesn’t ring a bell with me. I was referring to this old cartoon:
“Newt”, the centaur, was one sidekick. Another centaur was “Tewt”, who IIRC couldn’t speak, but played panpipes to communicate. Even as a child, I thought it was odd that everyone understood what he was trying to say.
Wow. I guess I must have conflated that Newt fella (“Hey, Herc! Hey Herc!” – every line of dialog was spoken twice) with Nessus (the mythological centaur who tricked Hercules’s wife into poisoning him with a cloak soaked in Nessus’s blood), and come up with Neuses.
I think D3 (“Now that there’s a well-built door”) is a wolf (unnamed?) from a Droopy Dog cartoon that was doing a take on The Three Little Pigs; only with Droopy & siblings instead of pigs.