Inquisitorial Agents comprise a motley collection of fighters, fanatics, savants, and psykers. Most Inquisitors maintain one or more of these retinues, gathering individuals of rare talent, skill, and dedication to undertake their esoteric and lethal missions.
The team is made up of an Interrogator, his pet skull and either five or ten Inquisitorial Agents, who are some of the weirdest freaks from the 40k universe – which is really saying something. If you only bring five agents you can requisition some operatives from another branch of the Imperium, letting you pick from most operatives on those teams, though their leaders are not available.