Corporate Security Cyclops
From Halopedia, the Halo wiki
The Corporate Security Cyclops is a variant of the Cyclops equipped with an arm-mounted missile launcher and shield, with an industrial yellow paint scheme.
The Corporate Security Cyclops bears heavy resemblance to the unique model of Cyclops created by the AI Isabel aboard the UNSC Spirit of Fire. It is likely Isabel's model is based on the Corporate variant or another similarly pre-existing model.