Hell Dragons are created by Echo you may use a made up Hell Dragon in your Fanfiction.
Hell Dragons are a deep black.
They are not considered "Wings" because they are all powerful and mighty.
Their abilities is to blast a beam of darkness. No other information is known.
They live in the Shadow Dimension.
Also legend says that they brought violence to Pyherria
Known Hell Dragons
- Shadow
- Imperil
- Dark Nix