Characters by Name: I
Iago
Début: The Castafiore Emerald - page 9, frame 8 - Parakeet; a gift from Castafiore to Haddock.
Irma
Début: The Calculus Affair - page 54, frame 2 - The diva's maid.
Also appears in: The Castafiore Emerald and Tintin and the Picaros.
Ivan
Début: The Black Island - page 7, frame 10 - Villain; Dr Müller's right hand man and chauffeur.