Elago was born on October 18, 1989 in Manila. As a child, she stuttered and found it difficult to speak to others. She learned to manage the disability by joining drama clubs, singing, and reading out loud. She would eventually study at the University of the Philippines Diliman, graduating cum laude with a degree in Bachelor of Science in Hotel, Restaurant, and Institution Management. During her college days, she was a member of The UP Repertory Company, UP Kontemporaryong Gamelan Pilipino, a theater arts performing group, and a student councilor for two years. Elago was also involved in youth sectoral politics and activism, becoming a coordinator for Youth Vote Philippines and Rock the Vote Philippines, an officer in the United Nations International Youth Council, the Chief Media Officer for the Alliance of Young Health Advocates, and a member of the Asia Pacific Conference on Reproductive and Sexual Health and Rights - National Youth Committee in 2013. She was also the National President of the National Union of Students of the Philippines, and a national convenor for the Rise for Education Alliance and Youth for Accountability and Truth Now.
In 2016, Elago became a party-list representative for Kabataan Partylist, representing the youth sector. She was 25. As Kabataan representative, Elago was a member of the Makabayan Coalition with 7 others: Carlos Isagani Zarate of Bayan Muna, Antonio Tinio and France Castro of ACT Teachers, Ariel Casilao of Anakpawis, and Emmi de Jesus and Arlene Brosas of Gabriela Women's Party. She was reelected in 2019 for the 18th Congress, once again representing Kabataan Party-list. Joining her in the Makabayan Bloc were fellow incumbents Zarate, Castro and Brosas, along with Ferdinand Gaite and Eufemia Cullamat from Bayan Muna, for a total of 6 seats. She is currently a member of the minority for 12 House committees, including Youth and Sports Development, Women and Gender Equality, and Higher and Technical Education. Elago has currently authored 257 house measures and co-authored 8. She has already authored 426 bills during her stint in the 18th Congress. Besides being the youngest lawmaker, she is also the poorest lawmaker with a net worth of ₱ 85,400 based on her 2018 Statement of Assets, Liabilities, and Net Worth. She was also the poorest in 2017 with ₱ 75,800 net worth.
Advocacies
Running for Kabataan Partylist, she does not only advocates for the advancement of youth agenda but also for free education, free internet for all, and gender equality. She has also shown support to breast cancer warriors and survivors by donating her hair. Elago is also the founding President of the Philippine Stuttering Association, an advocacy group aimed at increasing awareness about stuttering.