|Full name:||Ferdinand Colm Chevalier|
|Birthplace:||Sheffield, United Kingdom|
|Birthdate:||February 8, 1971|
|Residence:|| Ontario, Canada|
Sheffield, England (formerly)
|Significant Other/s:||Rachel Duncan (ex-lover)|
|Family:||10th Earl of Sussex (father)|
|Portrayed by:||James Frain|
|First appearance:||"The Weight of This Combination"|
|Latest appearance:||"From Dancing Mice to Psychopaths"|
Ferdinand Chevalier is "a well-educated 'cleaner' who is both charming and intimidating; he's a powerful player in a secretive, multinational political faction that operates with questionable ethics and a ruthless approach." He debuts in Season 3.
Ferdinand is the illegitimate son of the 10th Earl of Sussex. He was raised in a rich and affluent environment, but struggled to rise above the stigma of being a bastard child.
In his youth he joined the British Army and moved upwards toward the renowned Special Air Service (The SAS). During his time with the special forces he learned to kill swiftly with efficiency which made him a prime candidate for the Dyad Institute. Joining the institution as an investigator for the "cleaning" team known as Topside, he worked closely with a number of the higher ups of the institution, becoming one himself, and even become the lover of Rachel Duncan.
Over the years as a Topside cleaner, Ferdinand oversaw to the purge of the clones, killing a total of six clones and thirty-two of their friends and family members. This purging included killing Niki Lintula and her family and an attempt on the life of Veera Suominen, which left her scarred but alive.
Ferdinand is seen again in "From Instinct to Rational Control", in which he is offering aid to Sarah and Mrs. S in return for rescuing Rachel.
After discovering that Sarah is working with Ferdinand in order to get the Neolutionist implant removed from her jaw, M.K. tracks Ferdinand through Sarah. M.K. sends a text to Ferdinand in Sarah's name telling him to meet her at Beth Childs' old flat. Once he arrives at the flat, he discovers that M.K. has set a trap for him. He learns that she is in fact Veera Suominen, the clone who survived the Helsinki clone purge.
|Season 3 appearances|
|The Weight of This Combination||Transitory Sacrifices of Crisis||Formalized, Complex, and Costly||Newer Elements of Our Defense||Scarred by Many Past Frustrations|
|Certain Agony of the Battlefield||Community of Dreadful Fear and Hate||Ruthless in Purpose, and Insidious in Method||Insolvent Phantom of Tomorrow||History Yet to Be Written|
|Season 4 appearances|
|The Collapse of Nature||Transgressive Border Crossing||The Stigmata of Progress||From Indistinct to Rational Control||Human Raw Material|
|The Scandal of Altruism||The Antisocialism of Sex||The Redesign of Natural Objects||The Mitigation of Competition||From Dancing Mice to Psychopaths|