From Halopedia, the Halo wiki
Halo Wars 2
Jerome-092 (Campaign and Captain Cutter)
In campaign Jerome-092 acts the same as he did in Halo Wars, barring Spartan slam. In Multiplayer Jerome-092 comes in two variations: one exclusive to James Cutter largely identical to how he functions in the campaign, and one exclusive to Commander Jerome that performs differently. Both versions of Jerome can be built at the UNSC Armory. For the Captain Cutter version unupgraded Jerome starts off dual wielding M6C magnums and is great against infantry, but only okay against vehicles, aircraft, and structures. Once upgraded with a Spartan Laser Jerome will be effective against vehicles and aircraft. In Blitz Jerome-092 costs 220 energy and features the Rush ability that eliminates spawn debuffs. Commander Jerome cannot hijack enemy vehicles but is able to inspire nearby troops to increase damage and call in a personalized command Mantis. He also wields a custom Hydra instead of a Spartan Laser. Jerome can pilot the Mantis himself or the player can use it as a separate unit. The Command Mantis will only use its missiles if Jerome is piloting it. If the Mantis is destroyed while Commander Jerome is piloting it Jerome will take damage, but not be killed. Unupgraded Commander Jerome is great against infantry, aircraft, and structures, but only okay against vehicles. Once the Improved Inspire upgrade has been purchased Commander Jerome will perform well against vehicles. In Blitz Commander Jerome costs 240 energy.