From Halopedia, the Halo wiki
The size and mobility of the AV-49 Wasp makes it a favorite of ONI Security teams in high-threat environments. ONI Wasps are outfitted with heavy armor and upgraded weapons, including all-environment homing missiles and HEDP machine gun rounds.
As the dark livery of these particular AV-49 Attack VTOLs imply, ONI Wasps are very often employed during stealth surveillance operations and night-strike sorties. The hushed and rumor-laden nature of this reality has earned both the craft themselves and their respective pilots the nickname “duskdevils.”
The ONI Wasp appears in Halo 5: Guardians, added in the Monitor's Bounty update, as a vehicle REQ card available for use in the Warzone and Warzone Firefight gamemodes via the requisition system, and is also useable in Forge and custom games.
In Warzone, the AV-49H can be called in. Its REQ card has the following attributes;
List of appearances