  Little Higgs models are an interesting alternative to explain electroweak
symmetry breaking without fine-tuning. Supplemented with a discrete symmetry
(T-parity) constraints from electroweak precision data are naturally evaded and
also a viable dark matter candidate is obtained. T-parity implies the existence
of new (mirror) fermions in addition to the heavy gauge bosons of the little
Higgs models. In this paper we consider the effects of the mirror fermions on
the phenomenology of the littlest Higgs model with T-parity at the LHC. We
study the most promising production channels and decay chains for the new
particles. We find that the mirror fermions have a large impact on the
magnitude of signal rates and on the new physics signatures. Realistic
background estimates are given.
