This is about as concerned for a fellow comrade as a Space Pirate can get.
Not very loyal, here is their list of leader "Follow whoever could step and kill you"
They do revive motherbrian time after time
individual mortality must be of very little concern to them, after all, they can all be cloned back to life, and if they're important enough even their memories would be backed up and implanted into the clone. Thats kind of like immortality, except even if life goes on for your clone, you're still dead, oh well.
which raises questions about mortality and souls conflicting with cloning....but what you must realize is they never thought Kraid as a leader, He, like that winged gargoin guy, was a living tank worth keeping around. To the spacepirates, they don't care who's in the pilot's seat, as long as the guns keep firing toward the enemy.
It does raise questions about souls if you believe in an afterlife I guess.... but in my opinion cloning would just create the same person if the personality/memories were placed into a brain identical to the previous one. (There's probably a bit more to it than that, but we haven't found it out yet.
but the same soul, or a new one?
In terms of fallen comrades/peer/etc., Space Pirates are only concerned about five things: who, what, where, when, and how. Beyond that, they pretty much don't care.