These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
The Space Canine Patrol Agents were said to never get out of limbo, but they did, as the Dog Star Patrol in Krypto the Superdog.
The Green Team, seen offering Buddy as much cash as they could so he could help them get out, finally did manage to get out as well, after decades.
Hilarious in Hindsight: In the second issue, Buddy runs into a teenager named "Jaime" who carries around an autograph book filled with the signatures of every superhero he's ever gotten a chance to meet. When he tries to get Buddy's autograph, he opens the book, exposing a page that reads "To my good friend Jaime - The Blue Beetle". That issue came out about 18 years before a teenager named Jaime Reyes officially became the third Blue Beetle.
My Real Daddy: Guess who. Even this page barely mentions Tom Veitch, Jeff Lemire or Peter Milligan, who also wrote Animal Man, and his earliest appearances are obscure.
Tear Jerker: There are a lot, including the tragedy of B'Wana Beast in the first arc, The Coyote Gospel, the life story and death of Red Mask, Buddy's family being murdered, and the final issues Grant Morrison wrote where he and Buddy met.
The very last couple of pages during Morrison's run, where the quote comes from. That's already a tearjerker in of it's self, but what makes it moreso sad is what happens at the end. After Grant shines his light to try to signal Foxy, he gets no response and leaves. A light then shines back from the hill. Grant doesn't see it.
Fridge Brilliance hit me after reading that scene. After Grant makes all these arguments that comics matter and that we should treat fictional characters with some respect, he makes his most convincing argument in those last panels. Because Foxy represents childhood and more importantly, innocence, and the only place Grant can still find it. . . is in a comic-book world. I'm not sure if any of that made sense, but it was a Tearjerker to me.
The characters still in limbo, though some might eventually return to continuity, several won't. As Merryman of the Inferior Five pointed out, times have changed where certain characters won't likely return, like the Space Canine Patrol Agents.
"Let's face it, who cares about the Space Canine Patrol Agents in this day and age?"
In The New 52 Cliff's death, which also leads to the disintegration of Buddy's marriage.
What Do You Mean, It Wasn't Made on Drugs?: Some of the things Morrison writes, you'll swear he was on peyote. Ironically, he was allegedly straight-edge at the time, and only started taking mind-expanding substances later.
The Woobie: Buddy. He endures so much at the hands of his writer.
Hasn't changed with The New 52 his daughter, Wing, becomes the new Avatar of the Red; his son, Cliff, dies; his marriage disintegrates; and he loses his connection with the Red after demanding that the Totems leave his family alone.