Tekrai was a thief and a murderer while he was alive. His criminal lifestyle caught up with him and he ended up being murdered himself. As his soul was waiting for judgement, Tekrai was pulled aside and sent to work as a soldier for the god Tix. He accepted if only because the alternative was to have his soul deconstructed.
Tekrai remembers large parts of his living life, but as time goes on he slowly forgets until all he can remember doing is fighting and killing. The other warrior spirits do not speak to him because they feel he is unworthy of the position. The only other spirit Tekrai converses with on a regular basis is Casandrel. He enjoys her company and comes to her rescue without fail should she attempt to be captured by mortals.
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Omega
I love the descriptions you put with your characters. They're quite informative without being unnecessarily long.