Firelord, the former herald of Galactus, was a native of Xandar. His birth name was Pyreus Kril.
From: "Religious Beliefs of Marvel Characters" discussion board started 20 October 2004 on Comic-Forum.com website (http://www.comic-forum.com/marvel/Religious_beliefs_of_Marvel_characters_397905.html; viewed 8 June 2006):
Date: 20 Oct 2004 21:55:56
Subject: Religious beliefs of Marvel characters?
Does anybody know the religious beliefs of various characters?
Date: 20 Oct 2004 23:16:20
From: Samy Merchi
Barring any actual solid evidence in the characters' own books, you could always fall back on the Infinity Crusade and see which sides the characters were on in that conflict. Anybody feel like whipping those issues out and checking these specific characters?
Date: 21 Oct 2004 03:52:34
From: The Black Guardian
Anyway, here's the list of those who "faithfully served" the Goddess: Captain America, Jamie Madrox the Multiple Man, Jean Grey, Namorita, Silhouette, Spider-Man, Puck, Archangel, the Inhuman Crystal, Firelord, Hercules, Shaman, Talisman, Moondragon, Quicksilver, the Scarlet Witch, the Silver Surfer, Sersi, the Living Lightning, Thor, the Invisible Woman, USAgent, Moon Knight, Wolfsbane, Doctor Strange, Wonder Man, Daredevil, the Black Knight, Windshear, Sasquatch, Storm, Gamora, Sleepwalker.
IIRC, even if you read the crossover, it's still pretty vague in what religions the heroes believed.
Date: 21 Oct 2004 03:57:48
From: Samy Merchi
In many cases, it [Infinity Crusade] is the strongest canonical reference to many of the characters' religious stance. Some lucky ones have been dealt with at more depth in their own books (DD, Rahne, Storm et al.) but for many characters Infinity Crusade is the biggest canonical reference. If we want to go by canon rather than sheer postulation.