Hello, ma' bois
Das ist his YT channel: youtube.com/channel/UCjC1Q3MYFL9tGFtXnzXb-gg
He confirmed to be Leopold and in his video "WAS WILLST DU TUN 2.0 (prod. Hercules Beatz)" he proved to be him by showing some photos of him when he was young.
BTW. Why does he have a Polish coat of arms on his avatar?