[3] He is known for popularizing the "Mayaman Challenge" which encouraged people to donate to those affected by COVID-19 pandemic-related quarantines.

According to his own account, Marcos started his philanthropy in 2007 and for a long time did not benefit from social media publicity.

He runs the Optimum Eye Care Program, which aims to provide eyeglasses to people unable to afford them.

[4] Marcos came to wider public attention when he started a trend on Facebook called the "Mayaman Challenge" urging the rich to give donations to people affected by the enhanced community quarantine imposed amidst the COVID-19 pandemic.

The Commission on Elections (COMELEC) ruled that his candidacy was valid and that he was capable of launching a campaign given the size of the social media following he had already garnered at the time.