Okay, just woke up (5:30am here) and am trying to get my head in the right place to reply.
First of all, sticking to CC3 (Character Creator 3 -- no such thing as 4) characters is your best bet for working in iClone. It gives you all kinds of advantages, including being able to use almost anything from Daz in the way of avatars, clothing and hair. You *can* import avatars through 3DX, but you won't be able to use any iClone clothing or much else with them, and they also can have many issues with other things (like facial animation). MUCH better to stick within the universe by CC3 Pipeline.
As to getting your avatar to look like the one you posted to me -- not *completely* easy but doable. The Daz superhero suit has zones which should allow you to get very, very close fairly easily. The rest (the minor details) you can either have somewhat different from your print version (hey, even Superman looks different in the comics than he does in animation or live action :>
or you can learn the techniques you will need to get him right. OR you can reverse engineer him (which is to say, you can change the comic version to match what you could achieve by the animation).
I started to put together such an avatar for you but it got late and I got sidetracked on the cape/cowl (I found a cool one in Daz but I had to create a UV map for it. Easy to do with 3D Coat but that's still another tool for you to have and while it cost less than $100 -- I think $79 right now -- it might be asking too much for you to get. But eventually you may want it anyway, as it's insanely useful for 3D work).
Today is my tennis day, and since this is the first time I'm trying it in many months (due to surgery) my time may be limited (IOW, after I try this I may be in so much pain I may not be able to sit at the computer). Let me see how it goes and if I can squeeze in an hour or so I'll try and come up with something close.
Alienware Aurora R12, Win 10, i9-119000KF, 3.5GHz CPU, 128GB RAM, RTX 3090 (24GB), Samsung 960 Pro 4TB M-2 SSD, TB+ Disk space
Mike "ex-genius" Kelley