Speaking of big, black blob of eeevil with a red eye, the bad guy in the indie game Botanicula looks quite similar to Dark Matter, with one cutscene where it looks almost identical. There, in case anyone ever asks about that, I already answered it. Okay, so I didn't actually answer anything...
Oh yeah, well what is Nightmare's relationship with the Waluigi? Answer: Wario.
Uncle's Gobblo's advice on relationships can be found at his website... Hey, wait, the "Why I'm Single" page is resulting in a Forbidden error. 'Snaff, stop working on KRR, Pokemon GO is ca- Er, I mean, your website has an error.
Bah! That's my host's very odd word censorship. It's not even like it cuts out swears or anything, no. This time, it was a joke about stealing personal information. I guess that's to prevent phishing sites.
Oh hey, it's Halloween today. Today's the day we all get to follow in the footsteps of the great Kirby by wearing cool hats/costumes and stuffing our faces with sweets :D
"They all" being those three scouts mentioned in the context of the question. There's just the three which are only mentioned in The Crystal Shards. No real clue why that was a thing.
Anyhoo, correcting myself from guessing "Remu" and such, they are Rimura, Rimuro, and Rimuru, each one possessing a different one of Kirby's friends.