Kalvin was a member of The Yardbirds, a group of thieves, and was previously assassinated by an unnamed ICA agent. Following the assassination, the ICA performed reenactments of the contract as a way of training potential recruits.
Little is known about Kalvin Ritter's origins. Allegedly from Barbados, Ritter first emerged in London in the 1980s as a part of the notorious international jewel thief network "The Yardbirds."
The network's leader, legendary Serbian bank robber Aleksander Kovak, took a shine to the young Ritter and became his mentor. Ritter was a natural cat burglar. Incredibly athletic and acrobatic, he showed impressive strategic skills and high social intelligence. He was charismatic, charming and capable of switching effortlessly between accents, identities and personalities. He was also quite ruthless when he had to be, unafraid to injure or kill security personnel who stood in his way.
When Interpol finally broke up The Yardbirds, only Ritter escaped, emerging years later as a respectable art collector in Florida, USA. Assuming his old Yard Birds moniker, "Sparrow," he stole priceless art worth hundreds of millions from hapless well-to-dos. In 1998, Ritter saw the writing on the wall. Future crime would be digital, not analog, and he decided to retire as a cat burglar. Unfortunately, a former client realized that Ritter had sold him a counterfeit Gorka and hired ICA to put an end to the Sparrow's dream of retirement.
During Guided Training and Freeform Training, Ritter has dark skin, a trimmed beard and short black hair. He wears purple-tinted glasses and sports an orange cravat scarf.
All members of The Yardbirds, including Kalvin Ritter, also make an appearance during the in-game briefing of The Last Yardbird mission. However, in the briefing, no members of the Yardbirds were shown to have dark skin. It can be assumed that the actor that portrayed Ritter in the tutorial missions bears little resemblance to the real Ritter.
- Kalvin Ritter's in-game briefing conflicts with the events of HITMAN™ 2. The in-game briefing states that The Yardbirds were broken up by Interpol with Kalvin being the only member to escape. In actuality, The Yardbirds willingly disbanded following an unfortunate bank heist. Ironically enough, Kalvin Ritter was the first Yardbird to die.