As a primer I thought I'd highlight the most famous scions who have served the mortal races and are lauded for their legendary deeds. There were certainly other scions known to history, but those below are noteworthy for coming together in cross-pantheon alliances.
Bullets, Axes & Pain
Aisling O'Shea, Fear de Leabhair, Polymitera, Nevermore, The Varðmaðr, Harland
Jack Cook, Waffles, Kate Ann Moreau, Kassandra Tealk, Astrid, Nathan Pritchert, Camila Cortéz, Vader
Delayed Ragnarök, Assisted in the recreation of Tartarus, Thwarted the invasion of the old Overworlds from the allied forces of Titans, Uncovered a plot by rogue gods to destroy the connections of the old world to the worlds of soul and spirit, Helped create the new world
Children of the New World
The Morrigan (of Honorable Combat), Asteri, Stjarna, Mei Lei, Ankhreshet
Saving Gangaria from a Typhonic Earthworm, The Creation of the city of Sha'Tholos, Stopping their own co-member Farud Shar, Ended the first and second Folding events, Negotiated the end to the First War
The All-Faith Crusade
Najwa Falik, Amakif Jorsul, Eoin O'Shea, Siobhan O'Shea, Ce'o Esparza
Finbar O'Shea, Saoirse O'Shea, Séamus O'Shea, Damfwae Umleeauo
Ended The Spirit Assault, Saved countless lives during the fall of El Helai in the First War, Currently charting the Northern Continent
History repeats itself and most scholars agree that a new age of heroes is due to arise. What deeds will they accomplish to etch their legends into the annals of time?