Robert Downey Jr. and his wife Susan were at the Los Angeles ceremony

The Oppenheimer star served as one of the celebrity presenters that also included the likes of Kim Kardashian, Regina King, Brie Larson and Rob Lowe. Downey Jr. and wife Susan at Breakthrough Prize ceremony in LA. Kim Kardashian and Regina King were also presenters.

Robert Downey Jr. and his wife Susan Downey attend the 10th annual Breakthrough Prize ceremony at the Academy Museum of Motion Pictures in Los Angeles on Saturday, April 13, 2024. The ceremony honors acclaimed science and mathematical luminaries. Each prize is $3 million and presented in the fields of Life Sciences, Fundamental Physics, and Mathematics.