Using 'Immortal' as part of a username may offend those of a religious bent. In my mind it smacks of equating yourself with God, or at least hints of idolatry. May I suggest you change your name to something less controversial?
I personally don't feel this way, but I take offence on behalf of someone who might.
I don't really take offence.
Why do people hunt out reasons to be offended on the behalf some unknown 3rd party?