Anybody used https://readyplayer.me/

it can create 3D avatars in .GLB format 

Fully rigged with facial blend shapes..

is there any way to convert them as cc characters .. 

i was able to convert them with mixamo without facial or talking features.. 
anybody help here 

You should be able to just double-click the GLB to open it in Windows Paint3D. You can then save as FBX. Then you can convert it to a non-standard iClone character with 3DXchange.

It is not CC3 compatible.

External characters from any source cannot be converted into CC characters. DAZ characters can be transformed into CC characters, but those are an exception.

You might be able to import them for use in iClone via 3DXchange if they are in FBX format, but they would not be CC characters.

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76% of original size (was 661x19) - Click to enlarge

There are even more theme-based sites from the Estonian developer Wolf3D:
https://readyplayer.me/cyberpunk
https://xmas.readyplayer.me/
https://fullbody.readyplayer.me/
You can find RPM models also on Sketchfab and in the Unity Store.

Instead of Paint3D where you might encounter problems with the facial rig and the bones afterwards:
76% of original size (was 661x19) - Click to enlarge
it might be better to use Blender for the GLB conversion, especially with the "ksons gltf"-plugin, as shown here:
https://forum.reallusion.com/FindPost469025.aspx

This will keep the facial blends for the import into iClone:
76% of original size (was 661x19) - Click to enlarge

As Rampa and animagic already mentioned, you can't bring the characters in CC3.
But why not use the clothes or the accessoires instead, as I have shown here some months ago:
https://forum.reallusion.com/468602/Neue-CC3Avatare-mit-Zubeh%C3%B6r-von-Wolf3D

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my question was wrong sorry for that

yes its fine enough if i can convert it to iclone with facial morphs
but how can i do it
when i select maya rig in 3D exchange after exporting from blender

the hands distort 

can anyone give a proper tutorial how to convert them for proper use in iclone .. i want my character to talk walk run smile..

76% of original size (was 661x19) - Click to enlarge

Do you export your character in a T-pose?

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76% of original size (was 661x19) - Click to enlarge

no a pose how to do that..
also i need the expression preset for wolf3d so that i can assign the expression morphs quickly

I'm no Blender expert, but you should be able to place the character in a T-pose there. Maybe someone here can chime in.

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76% of original size (was 661x19) - Click to enlarge

I was looking for more information myself. Trying to find an excuse to upgrade.