He's just a hopeless old soak! We should've killed him long since!
~ Tom about Haddock.
Tom is a supporting antagonist of the 2011 animated film The Adventures of Tintin: The Secret of the Unicorn. He served as a crew member who worked for Captain Archibald Haddock, but later turned against him in favor for the infamous collector Ivan Ivanovitch Sakharine.
Tom first appeared at the apartment of the famed journalist Tintin, who is working on the story of Sir Francis' treasure of the sunken ship known as the Unicorn. As it turns out, Tom and the rest of the crew (including Allan and Pedro) are aware of the story and have mutinied against Haddock in order to help Sakharine steal the treasure and avenge his ancestor Red Rackham (who was killed in a failed attempt to steal Sir Francis' treasure). To that end, Tom kidnapped Tintin by putting him in a cargo box and transporting him to Haddock's ship called the SS Karaboudjan, even after murdering Interpol agent Barnaby Dawes (who tried to warn Tintin about Sakharine's intentions).
Allan and Tom searched through Tintin to find the second scroll detailing the location of the treasure (as Sakharine already obtained the first scroll), but is nowhere to be found (since the second scroll is inside Tintin's wallet, which has been stolen by Aristides Silk). As such, Sakharine orders Allan and the crew to kill Tintin as he is no use, but Tintin escapes with the help from his dog Snowy and Haddock. As Tintin, Haddock and Snowy escape on a boat, Tom orders the helsman to ram their boat down to kill them, but this only made Sakharine very furious at Tom (as he wanted Haddock alive). Fortunately, Allan pointed out that two boats are missing, to which Tom realized that the one that he destroyed was a decoy. Sakharine soon learns that they're heading to Bagghar (the location of the third scroll), so he angrily orders Tom and the crew to track them down.
After reaching Bagghar, Allan and Tom spotted Haddock retrieving the first scroll from Detectives Thomson and Thompson (who managed to retrieve Tintin's wallet after arresting Silk). To that end, Tom greeted Haddock, allowing Allan to knock out Haddock with a bottle of rum before stealing the first scroll just as Sakharine sends his pet falcon to steal the third scroll from a bulletproof glass case. Eventually, Snowy was able to retrieve the first and second scrolls for Tintin, who eventually managed to catch the falcon with the third scroll. However, Sakharine forced Tintin to surrender all three scrolls by having Allan and Tom to push both Haddock and Snowy into the water, forcing Tintin to rescue them while Sakharine and his thugs sail away with all three scrolls.
However, Tintin and Haddock were able to pinpoint Sakharine's current location, which happens to be the same dock where Tintin was captured and taken to. With that in mind, the duo and the police were able to set up a trap against Sakharine and his thugs, and Tom ends up being trapped in several tires while the rest of the crew slipped on several bricks sent into the pavement by Snowy.
It can be implied that Tom is arrested and sent to prison along with Sakharine and the other thugs for their crimes.