From Halopedia, the Halo wiki
Veteran Mantis are a variation of the standard Mantis employed by the UNSC. These Mantis are more upgraded and operated by more experienced drivers.
The Veteran Mantis are classed as core mechs, they perform well against infantry, vehicles, and aircraft.
<gallery> File:HW2 Veteran Mantis comparison.png|The Veteran Mantis compared with the Mantis. File:HW2 UNSC Blitz Mechs.png|Comparison with the other UNSC mechs.
List of appearances