The agency's symbol is a lantern inspired by the lantern Marissa Fittes used against the Mud Lane Phantom. With her that moment was Tom Rotwell who used his homemade sword to defeat the phantom. The sword Tom used also became Rotwell Agency's symbol.
- Quill Kipps (formerly agent, team supervisor and leader; now resigned)
- Kat Godwin (member of Kipps's team)
- Bobby Vernon (member of Kipps's team)
- Ned Shaw (formerly part of Kipps's team; deceased)
- George Cubbins (formerly; now agent of Lockwood & Co.)
- Sam McCarthy (deceased)
- ↑ The Whispering Skull, II: The Unexpected Grave, Ch. 4
- ↑ The Whispering Skull, V: A Big Night Out, Ch. 21: "Fittes House, headquarters of the estimable Fittes Agency, lies on the Strand just down from Trafalgar Square."
- ↑ The Screaming Staircase, IV: The Hall, Ch. 24
- ↑ The Screaming Staircase, V: And After, Ch. 25