Penumbra is Umbra's Winged Angel One Winged Angel form, created by his Ghost Army mass-possessing Bow who in turn possessed him, allowing Umbra to control both their Obscuric power and his own to create a form that resembled a mix of Origin Giratina and Black Kyurem that was capable of using all known Ghost-type attacks.
- Type: Ghost
- Ability: Pressure
Umbra first took this form at the end of the Conquest arc to fight Ammy and her party plus his fellow Warlords.
Umbra and his team later achieved a smaller, weaker version of the form by accident during a skiing incident.
The Ghost-types of Creepy Steeple achieved this form with the power of the Ruby Star.