This week, we have a cross-challenge with the Pixel Art Official Discord server, a community originating at the r/pixelart subreddit. Both communities are to re-imagine each other's mascots. For us, that means we are tasked produce high quality version of their mascot character named Carter:
They have come up with many variations of him over the years (for inspiration)
They will be the first to admit that Carter leaves a lot to be desired from a pixel art perspective. This is our chance to help them out and fix that!
Next week, once the challenge is over, expect a news post to showcase their versions of the PJ Nerd for everyone to see 
Canvas Size - Min 50x50. Max unrestricted.
Colours - Max 16.
Transparency - Optional.
Animation - Optional.
As an additional note, did you know PJ has its own discord server?
Hey, thanks for that additional clarification! I especially like that first and fourth image, haha
the main thing about carter is the messy eyes and headshape, also technically the king isnt Carter the king is called Porter but its in the same spirit as carter. The best way to classify Carter is probably the messy shape of everything, heres some variations of him that people made in a Carter-themed daily challenge on pixcord:
I find this one to be really creepy tbh
Carter also shoots lasers apparantly
Heres a cowboy-themed carter that was made for a game
The original Carter is the first image. Everything else is a variation off of that 
I would guess just skin and eye color, and I want to say a wide head and no nose, but the king one breaks that.
You can now view the Nerd challenge announcement here (if you've already opened the invitation in the news post above), and the submissions here.
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Man, all those defining features!