Colin Cristo Harianto is an aspiring student in Olympiad Mathematics and Sciences. He is one of two latest co-founder inducted in October 2025, and spends most of his time doing mathematics and sciences. Originating from Surabaya, Jawa Timur, he currently studies at Jakarta Future School. He is passionate about empowering and guiding others to achieve their full potential. He serves as project leader in Omsla's first ever onsite project in Surabaya, Project Dewantara(a community outreach project of Omsla in collaboration with Irama Meraki aiming to empower underprivileged children with STEM and Art, grounded in the values of SDG 4,13,17, and involving a total of 50+ volunteers), and various other Omsla projects.

He has won various awards in mathematics olympiads including a Gold Medal (Individual round) and Bronze Medal(Team mind sports challenge) in SIMOC 2024 and a Silver Medal in Vanda National Junior Science Olympiad 2022. Aside from Mathematics and Sciences, he has excelled in other fields and achieved awards such as a Gold Medal in National Junior Cybersecurity Olympiad by NUS(National University of Singapore) in 2024, First Place in Young Achievers Business Olympiad Business Simulation Regional Round 2025, and a Platinum Award in International Professional Piano Association ID South East Asia Division Young Artist Category 2025. In 2022, he was awarded a Platinum Award from Amadeus Enterprise after 4 years consecutively winning Gold Awards in Festival Indonesiana with the aim to conserve Indonesian Culture.