waterkh is doing a lot of different projects in the Kingdom Hearts community, including the first KHUx Medal Viewer (source code available, though the website may be down now), KH Re:Write & MoM Re:Chart. They also make videos on YouTube discussing theories and creating video essays.
Find waterkh online:
Twitter
https://twitter.com/water_kh
YouTube
https://youtube.com/channel/UCEled-kRX7w0I2W8TNbrx4A
Twitch
https://twitch.tv/waterkh