I honestly doubt we're going to get another novel, largely due to how poorly received Flame Dragon Knight Was. Still Aazealh did their own thought exercise on how Grunbeld's story should have played out and that got me wondering about the other members of the Neo Band of the Hawk and what sort of pasts they have. So I decided to post my own guesses, with any criticism or feedback being appreciated.
Grunbeld's backstory is fine in the basic details (he was a freedom fighter protecting his kingdom, one of his friends betrayed him out of jealousy, and that this betrayal is what made Grunbeld willing to sacrifice.) The problem is more execution and Aazealh did their own thought exercise that kept the basic details but changed the more ridiculous elements.
Locus: This one took some thought but I do think that something similar to Grunbeld played out. Locus is a man of honor in a lot of ways, and it was also pointed out elsewhere that he never served a lord before Griffith. Someone made the suggestion that like Grunbeld he too experienced betrayal, in this case from the lord he had sworn himself too. I think that such a thing makes sense for him, and would explain why he didn't want to tie himself to another lord until Griffith.
Irvine: This is admittedly the one I've developed the most but I like to imagine that Irvine was a kind of Robin Hood figure once upon a time. Steal from the rich to give to the poor; he even had his own band of merry men and a love interest a la Maid Marian (not to mention a nemesis akin to the Sheriff of Nottingham). However, things end up going tragically wrong when the Sheriff of Nottingham figure tracks Irvine down and burns down the sanctuary, killing most of the merry men and the love interest. At this point, Irvine sacrificed the surviving members of the band out of a belief that they were all doomed anyway and that someone needed to avenge them. Irvine than used his apostle form and powers to wipe out the attackers and kill the Sheriff of Nottingham figure.
Rakshas: The guy seems somewhat more psychotic and lacking in loyalty, and he was also thrown out of the Bakiraka before becoming an apostle, so I'm entirely sure what drove him to make a sacrifice. The best I can think of is that he might have fallen in love with someone after being exiled; when he faced death he sacrificed the person he loved because he didn't want to die....mainly so he could keep killing.
Grunbeld's backstory is fine in the basic details (he was a freedom fighter protecting his kingdom, one of his friends betrayed him out of jealousy, and that this betrayal is what made Grunbeld willing to sacrifice.) The problem is more execution and Aazealh did their own thought exercise that kept the basic details but changed the more ridiculous elements.
Locus: This one took some thought but I do think that something similar to Grunbeld played out. Locus is a man of honor in a lot of ways, and it was also pointed out elsewhere that he never served a lord before Griffith. Someone made the suggestion that like Grunbeld he too experienced betrayal, in this case from the lord he had sworn himself too. I think that such a thing makes sense for him, and would explain why he didn't want to tie himself to another lord until Griffith.
Irvine: This is admittedly the one I've developed the most but I like to imagine that Irvine was a kind of Robin Hood figure once upon a time. Steal from the rich to give to the poor; he even had his own band of merry men and a love interest a la Maid Marian (not to mention a nemesis akin to the Sheriff of Nottingham). However, things end up going tragically wrong when the Sheriff of Nottingham figure tracks Irvine down and burns down the sanctuary, killing most of the merry men and the love interest. At this point, Irvine sacrificed the surviving members of the band out of a belief that they were all doomed anyway and that someone needed to avenge them. Irvine than used his apostle form and powers to wipe out the attackers and kill the Sheriff of Nottingham figure.
Rakshas: The guy seems somewhat more psychotic and lacking in loyalty, and he was also thrown out of the Bakiraka before becoming an apostle, so I'm entirely sure what drove him to make a sacrifice. The best I can think of is that he might have fallen in love with someone after being exiled; when he faced death he sacrificed the person he loved because he didn't want to die....mainly so he could keep killing.