The child, named Martin Brundle, is raised by Anton Bartok, who is the owner of the company which financed Brundle's teleportation experiments and fully aware of the accident which genetically merged Seth Brundle with a housefly (a condition that Martin has inherited).
The child, named Martin Brundle, is raised by Anton Bartok, owner of Bartok Industries (the company which financed Brundle's teleportation experiments). Martin is unknowingly being exploited by Bartok, who is fully aware of the accident which genetically merged Seth Brundle with a housefly (a condition that Martin has inherited).