Early roles and breakthrough (2010–2017) At age 7, Brillantes began appearing in a number of television commercials and made her debut in the children's comedy show,
Goin’ Bulilit’ in 2010. The same year, she played a supporting role in the series
Precious Hearts Romances Presents Alyna. In 2012, she began appearing in more television series as young version of the lead actresses in
Budoy as young Jackie played by
Jessie Mendiola,
Kahit Puso’y Masugatan as young Veronica played by
Andi Eigenmann and in
Ina, Kapatid, Anak as young Celyn played by
Kim Chiu. She received praises for her role as Princess in the fantasy series
E-Boy and played minor or supporting roles in the anthologies
Wansapanataym and
Maalaala Mo Kaya. Brillantes made her one-time appearance on
GMA Network at
Cielo de Angelina as Bernadeth Nantes. In 2013, Brillantes was cast in two programs
Bukas Na Lang Kita Mamahalin and ''
Pidol's Wonderland. After playing supporting and minor roles since her acting debut, she starred in her first lead role, Annaliza (a remake of the same name originally played by Julie Vega). The series reigned over its timeslot and received its highest national TV rating of 27.8% on February 12, 2014. Her performance earned her an accolade for Best Child Performer at the 27th PMPC Star Awards for Television. The following year, she landed another role in the family drama series Hawak Kamay''. Her portrayal as Lorrie earned her another accolade at the
Yahoo! Celebrity Award for Child Star of the Year. Brillantes ventured more dramatic roles and played supporting roles in ''
Pangako Sa 'Yo as Lia Buenavista and in Ikaw Lang ang Iibigin as Stephanie Reyes. She became an occasional performer in the musical variety show ASAP and was cast in two more television programs in 2017, A Love to Last and another episode of Wansapanataym'' opposite
Grae Fernandez.
Further film and television appearances (2018–present) Brillantes worked on three television projects in 2018. She was cast in a minor role as Young Matadora played by
Aiko Melendez in
Bagani and starred in an episode of the weekly drama anthology
Ipaglaban Mo!. In October 2018, she was cast to play one of the lead characters of her biggest role to date, Marga Mondragon Bartolome, in the afternoon drama soap
Kadenang Ginto. Along with newcomer
Francine Diaz,
Dimples Romana, and
Beauty Gonzalez, it reigned over the rival shows and received its highest national TV rating of 27.1% on April 23, 2019. The series also helped propel Brillantes to new heights of popularity, increasing her presence on social media. Her portrayal earned her a number of accolades such as Most Promising Loveteam for Television with
Seth Fedelin at the
Box Office Entertainment Awards, Best Performance in a Supporting Role at the GEMS Hiyas ng Sining Awards and Outstanding Social Media Personality of the Year at the EdukCircle Awards. The same year, Brillantes also appeared in a supporting role in the comedy film
Ang Dalawang Mrs. Reyes and starred in the film
Kahit Ayaw Mo Na alongside
Empress Schuck and
Kristel Fulgar. The film received underwhelming numbers at the Philippine box office, grossing less than ₱300,000 on its opening day. In 2019, she became more visible in films. She starred in an
iWantTFC Originals produced movie
Spark opposite
Grae Fernandez. In May 2019, she starred with Miguel Tanfelix, Bianca Umali, Taki and Kim Last in the horror film
Banal. While the film received average reviews from critics, the film underperformed at the box-office. In August 2019, she starred in another horror film
The Ghosting with
Khalil Ramos. Despite the decent critical reviews, the film still received underwhelming numbers. In November 2019, Brillantes starred opposite
Seth Fedelin in the romantic comedy film
Wild Little Love. First premiered on the streaming platform
iWantTFC, the film also made its debut on television in 2020 and on the streaming giant
Netflix in 2021. In December 2019, she appeared in a minor role as young Morissette Molina played by
Anne Curtis in the blockbuster comedy film
The Mall, The Merrier. In March 2021, she starred with the
Gold Squad in the drama series
Huwag Kang Mangamba. In June 2021, her episode in the anthology series
Click, Like, Share: Poser premiered on
iWantTFC service. In September 2021, Brillantes played a supporting role in the
Erik Matti film
On the Job: The Missing 8 which was premiered at the
78th Venice International Film Festival. Later in 2021, she reunited with
Seth Fedelin in the weekly series
Saying Goodbye which premiered on the Chinese streaming service
iQiyi. The following year, Brillantes starred in two
iWantTFC produced series,
Lyric and Beat and
Drag You & Me. Both shows received overwhelming reception from the audience. In August 2023, she made her television comeback in the teen drama
Senior High where she plays both roles of twin characters Sky and Luna Cruz. Following the success of
Senior High, she reprised her role in a 2024 TV series sequel,
High Street. ==Acting style and reception==