I'm sure there are at least some people on here aware of "Rock, Paper, Scissors, Lizard, Spock". So that seems to warrant the question: what would the Animorphs equivalent be?
Rock, Paper, Scissors, ______, _______?
Make sure to include some kind of explanation of what-beats-what and a reasoning why.
Andalite and Yeerk seem the obvious choices and can slot in almost perfectly for spock and lizard, respectively, except Yeerk would "infest" Andalite. But there has to be something better.
http://en.wikipedia.org/wiki/File:Rock_Paper_Scissors _Lizard_Spock_en.sv gAny thoughts?