'Irish'

I believe Iris is the star here;

she is gorgeous and personable and links the characters and "what really happened on Mars" for the audience. I like her spunk and she has intelligence to boot. The banter between Mohr and her is quite zesty and resolves rather nicely at the end. Though there is suspense contained therein as the crew gets decimated left and right. So one is left hanging as a result. The humour and goodwill among the crew is a delightful touch as well.