Jan Templar is a playable character on killzone,and is the firsth on the campaingn.
-It is good to see you captain templar!-soldiers isa on the game whem they see he. this could mean that captain templar is know in many places of vekta. he is too a brave mam and pleasant.
It is playable throughout the campaingn but is mandatory to be playable in the firsth two chapters or acts.