De Leon was known for directing some of the longest-running shows in the Philippines, Eat Bulaga!, Bubble Gang and Pepito Manaloto.
De Leon is known for directing various television series for GMA Network such as Bubble Gang, Pepito Manaloto, Eat Bulaga!, Anna Karenina, T.G.I.S.
[6] De Leon also directed Iskul Bukol, TODAS, VIP with Vilma Santos, and The Sharon Cuneta Show.
[4] De Leon inherited the directorial role for Bubble Gang when his predecessor Uro dela Cruz died in February 2016.
[8] His health deteriorated in 2021; he suffered a heart attack in July which required him to undergo an angiogram and angioplasty, and contracted COVID-19 amidst a pandemic of the disease in October, which led to colleagues Michael V. and Ronnie Henares to host a fundraising for him.