In a non-canon book series about the Q, the barrier is Q related. It’s not their formation, however. IN Q-Squared, we find out that it is
Q himself–the one we know, after Trelane disincorporated him. He was trying to reincorporate, and piggybacked on existing people. He didn’t have his memory in that state, so he was more like a new being trying different things.
In the non-canon book series about Q, the barrier is
there to keep a superpowerful being named 0 from escaping and wreaking havoc on the galaxy.
That’s the book I was thinking of, above.
Like this?
Take care, young ladies, and value your wine
Be watchful of young men in their velvet prime
Deeply they’ll swallow from your finest kegs
Then swiftly be gone, leaving bitter dregs
Ahh-ah-ah-ah, bitter dregs
Yours would work, but I was thinking more:
SPOCK: Yes, sir. There’s a Tyger, tyger, burning bright in the forest of the night.
SPOCK: Once upon a midnight dreary while I pondered, weak and weary.
Very nice, Mr Ears.