Minecraft dungeons - Use the same character on Xbox one as PC

This article gives you helpful information on any questions you might have they also stated that save files and progress does not transfer.

https://help.minecraft.net/hc/en-us/articles/360041345271-MINECRAFT-DUNGEONS-FAQ

"At launch, you´ll be able to play online multiplayer with players on the same platform. Our goal is to let everyone play together regardless of platform, and we’re looking forward to enabling cross-platform play in
a future free game update. Save files and game progress do not transfer across platforms."

Completely understand why you would not want to create a new character, but unfortunately the two different platforms do not transfer across one another. Minecraft needs to set up a "cross save" feature to accomplish this.

How to Cross-play Minecraft on Windows 10, PS4, Xbox, Nintendo Switch

https://www.addictivetips.com/windows-tips/cross-play-minecraft/

Two years old, but helpful:

Minecraft Better Together: No cross save?

In order to be able to play Minecraft dungeons on pc, you will need to purchase the windows 10 version of the game.
Buy Minecraft Dungeons - Windows 10 - Microsoft Store

oh ok well that is kind of dumb and it should work with the same microsoft account but wait what about the cloud save of a character.

Minecraft is available on Xbox Game Pass
https://www.xbox.com/en-US/games/minecraft. Minecraft Dungeons is available thru Game Pass on Xbox and PC

https://www.xbox.com/en-US/games/minecraft-dungeons.

Hello Gareth, I'm glad to know that everything's is working now in your PC.

About the inconvenience with your Minecraft Dungeons character, if you are using the correct account on the Microsoft store, the Xbox app and Minecraft launcher, I recommend you reach out to Minecraft support in that case:

https://help.minecraft.net/hc/requests/new