Design Analysis - Tumblr Posts
I've already expressed my adoration of both designs of Telltale's Joker. But I just want to break down why they're so appealing to me.
In the game, John Doe goes through huge changes in his life that are expressed in his wardrobe. But the most dramatic change is at the last episode of the series. When he fully transforms into Joker.
Brian Matyas is a concept designer who had worked on both Batman Telltale games. He had posted some of his works on Artstation and Instagram.
[Brain Matyas Instagram Post]
https://www.instagram.com/p/BhucYx5lGCb/?img_index=1

(I suggest you read the entire post till the end.)
[John Doe]
As the game progresses in the story, players will probably take note of how John's wardrobe goes through the most changes compared to everyone else. But the key thing to note that stayed consistent in each episode was his half-fast way of buttoning/tucking-in his shirt and how progressively colorful his outfit was getting.

[Villain Joker]
There's a lot of things to break down about this outfit. First, Brian Matyas stated that Villain Joker was molded primarily by Bruce Wayne. Not Batman. Joker's business tie and fancy suit's purpose was to emulate Bruce's public persona of being a CEO (or, more simply, a person with power). Interestingly enough, Joker's gloves are basically the same kinds that Harley wears in game, as if it were to say now they're equals in their relationship (but obviously they're not). I've heard from others that gloves are symbolic of secrets, which describes how Joker has kept some information hidden from Harley.
The Villain Joker design is probably the most colorful one. His bright green hair, the 80 carpet patterns in his navy suit, the pop of hot pink, and the most disgusting looking dress-shirt I've ever seen. Jack Nicholas' influence isn't lost on me. This outfit screams bold and confident, and most importantly, free.
There are still elements of John Doe. The poorly done tucking and buttoning of Joker's shirt are there. But strangely enough, the strain of hair in front of his head is flipped. John’s was located on the right side while Joker purposely flipped it to the left. And that's not the only thing that's flipped. John's outfit consisted of a purple vest inside and a green/teal shirt outside. Now the pattern is switched with Joker, green shirt inside and dark navy suit outside. Subtle differences like this are led to believe that Joker wants Bruce Wayne to know that he's completely different from John Doe.
The last thing to talk about is his shaved eyebrow. I have no idea why he would do that. People have said it's because he wanted to express how much damage Bruce did to him. Personally, I thought it was like ‘girls making bad hair decisions after a breakup’ thing.
Although his design encompasses both Bruce Wayne and Harley Quinn's impact on his life. It's more leaning into Bruce.

[Vigilante Joker]
There's something about this design that always makes me feel so heartbroken. Not because it's a bad design but because of how much it reminds me how John had faith that if he lived up to Batman's standards that he would be able to maintain their friendship.
Brian Matyas said that he wanted the Vigilante Joker's silhouette to emulate Batman's. It's shown by how his hair and shoulders are curved to a point. Joker's makeup is a lot more gothic and is a lot more menacing than Villain's makeup. It also almost resembles the mask that typically Robin would wear.
Again, there are still elements of John Doe present here. But they are less noticeable than Villain's. Joker's left arm has stitches, (John has been seen wearing a vest that has a different color button then the rest) his shirt's collar isn't properly folded correctly, (John is practically never seen to maintain his dress-shirt collar properly) and he still keeps his vest unlike Villain route. (Although like Villain, there is a color swap with the green shirt and purple vest)
But one thing that jumps out to me is how dull in vibrate color he is compared to Villain Joker's or even John Doe's fourth episode outfit. I had to brighten up my screen in order to identify the smile patterns in his suit. Vigilante design is flashy, but it feels like he's being held back from fully expressing himself.
Joker never really understood Batman's moral code. For players to unlock the Vigilante route, they had to enable John's more violent tendencies. So his outfit only reflects the darker side of Bruce Wayne because that's what Joker believes to be what Batman wants from him.

Huge thanks to hemfbg. They were able to locate both Joker's concept art from Brian Matyas' Instagram.
[Hemfbg Telltale Community Post]
https://community.telltalegames.com/discussion/121009/concept-art-by-brian-matyas
