I voted "yes" but it's really up to you in the end.

Thanks! I think I'll do it but will also need to create background info that would work for me.

Yes

Yes

yes

First off 'Yes'.

Now, a long 'train of thought' comment.
I find you interpretation of the characters as 'not being a couple' interesting, as from the movie (not sure about supplementary materials or creator commentary) they are about as close as potential love interests as you can get without outright stating it. And should there ever be a sequel, I think they would get together, depending on the writers.

It's also interesting to note that the characters they were based off of in the source material did eventually become a couple. Although as there is significant adaptation deviation from book to film, they can be considered different characters.
TBH, it makes it odder they don't end up a couple. They have so much chemistry and are more a couple than many characters that do end up as couples.

But watching the film, it makes sense. It's actually brilliant. Them becoming a couple during the film, or showing serious romantic interest, would detract from Wolf's redemption arc. It would become an example of 'girl convinces guy to be good due to love for her' whereas the theme of 'The Bad Guys" is that you should be doing good FOR YOURSELF, not because of what others think or what you might get.
It also means there is a lot more focus on Wolf & Snakes' relationship, which is more interesting and plays a lot into Snake's own redemption arc.
So instead, Dianne becomes someone for Wolf to try to be like, someone who encourages him to be good for himself, not because of her. A much more powerful message, and more engaging story.

So, this leave's Dianne and Wolf's relationship open to interpretation (not that it stops the shippers). *I* consider them a proto couple at the end of the film, something that will naturally build around mutual respect, common history and goals, and shared chemistry as time goes on. And this is why I would say 'Yes" to any art you may make of them. But unless additional material is made, there is nothing that can prove that, so canonically you can easily interpret them as 'just friends' and leave it at that.

Does this have anything to do with your question? Not really, just felt like over analysing something. To be honest, your interpretation did make me look deeper and realise that not being a couple during the film added to Wolf's redemption, so thanks.

That was very interesting to read and in fact I pretty much agree with you say here.

Indeed, they have more chemistry than many canon couples and if they end up together it would look very logical. But movie has no proofs that these two have any feelings for each other and I can easily imagine them not getting any romance in the sequel as well. I disagree with some people who say that Wolf&Diane have "teased" or "subtle" romance, it feels to me that people just see what they want to see. Maybe it is because I already saw other "teased" romances that lead to nothing in the end.

Yes, I think they can't be considered same characters as their books counterparts. Especially Diane, who is only loosely based on Agent Fox. Besides, if writers follow the story of the books closely it means that Diane can die eventually.

Even though I like the idea of them becoming a couple and would love it if it really happened in the sequel, I prefer to follow rule "If it wasn't confirmed, then it is not true" here. That's why when I draw Diane and Mr Wolf I prefer not to show them in openly romantic scenes. Even when they were hugging in the nude, they were just scared to be caught naked in public and I didn't explain how exactly they ended up that way. Left it open for interpretation.

Sometimes I consider possible ideas of how can I draw them in an openly romantic way but it still feels kind of uncomfortable to me. I didn't intend to draw them as a family, but I really liked that concept of their possible daughter and felt that I want to draw her. Been thinking about background info/context as well. Maybe I'll portray her as "surprise kid". Mr Wolf and DIane being friends with benefits and DIane accidently getting pregnant one day. I suppose it is not how people would love their relationship to develop, but it can be a good compromise between canon info and fanon for me. I still would like to portray them as a healthy family, but such backstory may work better for me. Need to think about it.

Strangely enough, I think the 'friends with benefits angle could work for them. They're both friends built on trust and respect with similar backgrounds, but their personalities may not extend into the 'romantic relationship' territory, even if they both enjoy the 'flirting game'. But that doesn't mean they still aren't attracted to each other on a physical level and 'fool around' a bit. And they would both try to do their best for the child, further building on trying to be good and responsible.

Anyway, thanks for explaining a bit more of your opinion on them. It's very interesting because few other seem to pay 100% attention to what's a 'canon' couple.

Thanks! Good to know you find this idea not so bad. At the moment I don't see any signs of a romance between them. In fact mid-credit scene looks like a kind of a proof of that to me - if Wolf and Diane had any feelings for each other in the movie they would have shown it somehow when Wolf is released from prison. Them being just friends with benefits - I can imagine that. Wolf and Diane having accidental child can be an interesting concept to explore and I think I'd prefer to go that way rather than trying to create traditional romance story like I do with most couples in my pictures.

No prob! Yes, I am always careful about any "hints" because they can mean nothing in the end. "Like each other" doesn't equal to "Love each other". Interesting but when I watched Zootopia I saw Nick and Judy as just friends either. Only much later I learnt that very many people ship them.