Steele and de Villiers were joint-CDs at Tequila Johannesburg where they worked on Standard Bank, Neotel, Motorola and Monte Casino.
They will report to ECD Graham Kelly (pictured). A start-date has yet to be finalised.
Kelly commented: "I see this as a further step in our ambition to be the most integrated agency in the market. I can't think of many other agencies that have CDs with Gary and Hagan’s through-the-line background."
Steele and Hagan picked up a Media Lion and a Direct Lion at Cannes this year with "drunk driving can be fun" for Toot-n-Scoot taxi service.