Once more into battle. And then again.

Definition/Summary:

“The High-One”

Mythology

• Titan and the father of Eos, Selene, and Helios
• Titan, son of Uranus and Gaea
• “God of Watchfulness, Wisdom and the Light”

“Once more into battle”

• “Once more unto the breach, dear friends, once more;
  Or close the wall up with our English dead” – Shakespeare Henry V

Expanded info:

Add/Misc:

Satellite of Saturn, the sixteenth closest to the planet

It has an irregular shape