Yes it possible to have a customize player with Furioos.
Right now the SDK for Unreal Engine is still in developement, you wont be able to send any data from your JS client to your Unreal Engine app until it’s done.
But you can use our JS SDK to create your own player with a customized UI.

Please refer to this link to getting start with the JS SDK
You will also need a Pro account on Furioos to enable SDK.

If you also work with Unity, the SDK will be available later this day here.