As far as frogs and other amphibian stuff—that, again, is a reference to this kind of H.P. Lovecraft worldview where anything from the ocean is scary. Frogs, in a Lovecraft sense, are associated with some kind of unknowable world. They’re not from the ocean, but they’re also not from, you know, the woods. Where do they come from? And why are they always out there… chirping, or whatever the hell it is that frogs do? Lovecraft also uses birds that way—and birds are great—but I have a harder time drawing birds than frogs.
In the very first issue of Hellboy, I did a sequence with frogs in it, and it just sort of stuck. I established it early. Frogs will be my kind of icon characters; when frogs show up, you know something bad’s going to happen. They become symbolic of this kind of evil that’s always running around in the background.
And then things just tend to snowball. You know, you hear about something like a “rain of frogs,” which happens periodically for whatever reason—it’s one of those weird phenomena that gets written about—and, I thought, well, let me have a little bit of that kind of action. I mean, that’s a weird thing and it’s got a kind of authenticity to it: there’s something about it that’s unnatural, yet supposedly it does really happen. And I like that. Mike Mignola, on "why different species work so well in developing his mythological world"
Something Miz said last night got me thinking
Hellboy is such a friendly and personable guy, but he spends a lot of his time alone and seems to prefer it that way, even if it means leaving friends behind for a while. On the other hand, Abe is outwardly standoffish and terse, but he does not function very well alone and tends to fall into depression when he doesn’t have someone around to talk things out with, even if they’re a complete stranger.
Of course, there are specific situations things that have caused both outcomes, and situations where the reverse would probably be true for them, but that seems to be the general rule for them right now
Hellboy is an outgoing guy who needs to spend time alone to figure out who he is, and Abe is an introvert who needs to be around people to… figure out who he is.
The Abe Sapien ongoing continues to drive this point home in the most painful way.