I was bored so I made up some pictures of 2 Sens (former, current and future (at the time of the pic)) and mixed them together. Who each one is made of is a secret (hence the quiz) but some should be obvious. Others not so much, feel free to request some others via PM.
I think 2 and 4 are easiest, 1 is trickier and 3 and 5 should be the hardest ones to get.
Props to Silvercup for some ideas, she isn't allowed to guess >_>