"We burn what we want, when we want, and that's how this is gonna' go." 
Marcus Callum to Gabe Reynolds
Marcus Callum
Screen Shot 2015-01-04 at 8.45.09 PM


InGen Separatist Force


Jurassic Shark II: The Retribution (mentioned)

Jurassic Shark III: The Revolution

National Origin


Portrayed By

Ian Aston



Location (at time of death)

Walking Trail

Marcus Callum was a corrupt InGen employee, as well as Simon Williams' right hand man. He was a supporting antagonist in Jurassic Shark III: The Revolution, and is portrayed by Ian Aston. Marcus aided Simon in wiping out the Shark Hunters, and was given the task of killing Dan Bruines, one of Chase Landon's trusted allies. 

Marcus would help Simon fulfill his plan to detonate the Bombshark. In 2017, he tasked himself with hunting down Gabe Reynolds, who was out searching for the Bombshark. When faced with an opportunity to fight Gabe hand-to-hand, Marcus swiftly obliged, though the fight ended with Gabe shooting him in the head.

In the full movie version of the film, which was released in January 2018, Marcus was cut out due to his lack of connection to the main storyline. 


Jurassic Shark II: The RetributionEdit

While Marcus never actually appears in the film, Simon leaves him a message on his phone, telling him and the other employees to withdraw from the walking trail. He adds that they will need to rebuild their forces if they wish to commence the final part of their plan, revolution. After this, he ends the message and runs off into the woods. 

Jurassic Shark III: The RevolutionEdit

Marcus aids Simon in his final plan to wipe out the Shark Hunters and their allies, by sending groups of employees out to kill the group's members. Some time prior to the film's main events, Marcus helped kill many of the Shark Hunters, with Russell Griffin and Gabe Reynolds stepping out of the action and going into hiding. 

In June 2017, Simon deployed two ADM models - a Mako and Tiger Shark - with Marcus' help. The sharks went to the walking trail and attacked Owen Hawkins and Logan Shaw. Marcus assisted Simon during this time as they amassed the corrupt InGen employees to attack the town of Bradford, but unbeknownst to them, Owen was trying to reunite the Shark Hunters. During this time, he rescued an old friend, Billy Trenton, and they were joined by Keith Douglas - a corrupt InGen employee who defected to the Shark Hunters. Gabe would eventually set off to the walking trail to find the Bombshark, the employees' weapon of mass destruction. Marcus and many other employees went into the walking trail to ambush Gabe. 


  • This is Ian Aston's acting debut in Scott's films, as well as his only acting role.
Jurassic Shark III: The Revolution characters

Former Shark Hunters

Russell GriffinGabe ReynoldsBilly Trenton

New Hunters

Owen HawkinsLogan Shaw


SimonMarcus CallumKeith DouglasRainer KoffmanStone Brigham • Various InGen Employees
Jurassic Shark Film Series characters

Shark Hunters

Chase LandonRussell GriffinGabe ReynoldsEddie JacksonNate WilliamsDan BruinesBrett NelsonCarter PhillipsJimmy ClarkQuinn FreemanZion JonesBilly Trenton

InGen Separatist Force

Simon WilliamsMarcus CallumKeith DouglasRainer Koffman

Original Hunters

Drake MatthewsCooper CulmanJeff StantonAnna ShelbyAlexa Murray

Rogue InGen Employees


Other Characters

Kyle BlakesMax AndersonOwen HawkinsLogan Shaw