2006–2012: Early works

Gonzaga started her career on ABS-CBN for the sitcom, Let's Go!, where she played the role of Alex, which also became her personal nickname. Her role lasted until the series' fourth season called Gokada Go!. After her departure from the sitcom, she was cast in different dramas on the same network, such as Pangarap na Bituin, Your Song and My Girl.^[11][12]

In 2008, Gonzaga transferred to TV5 and became one of the hosts for the talk show, Juicy!. She played a lead role in the 2011 soap opera Babaeng Hampaslupa. Further roles on the network include BFGF, P.S. I Love You and Enchanted Garden.^[13][14]

2013–2019: Breakthrough

Gonzaga returned to ABS-CBN in April 2013.^[15][16] She was a co-host for the Philippine version of The Voice.^[17] She also served as a guest host for the Philippine version of Big Brother on its All In season. During the pilot episode of PBB: All In, Gonzaga was revealed to be the third and final celebrity housemate to enter the Pinoy Big Brother house, following collegiate athlete Michele Gumabao and actress Jane Oineza. She was given the title as "Sassy Sister ng Rizal".^[18] During a diary room session with Big Brother, Gonzaga turns out to be actually a celebrity houseguest and was tasked to avoid revealing the information to the other official housemates.^[19] After staying in the Big Brother house for two months, she returned to the "outside world" on June 14, 2014, and she was replaced by internet sensation Cheridel Alejandrino, also known as "Elevator Girl". Gonzaga went on to play her most major role as the lead character Diane Santos in the hit drama series Pure Love, a Philippine adaptation of Korean drama 49 Days, co-starring Yen Santos.^[20] Pure Love aired from July to November 2014.^[21][22]

She was also part of the comedy gag show Banana Split, and also starred in the drama anthology Maalaala Mo Kaya for two episodes.^[23] She then released her novel book Dear Alex, Break na Kami. Paano? Love Catherine (2014), under ABS-CBN Publishing, Inc.^[24] The novel received positive reviews from fans and critics alike, most complimenting the novel's "break-up" concept and enjoying its humor.^[25] A film adaption for the novel was reported to be in the works, with Gonzaga sharing interest in casting Luis Manzano, John Lloyd Cruz and Piolo Pascual for the film adaption.^[26]

She was also cast on her first film under Star Cinema, The Amazing Praybeyt Benjamin (2014), one of the official entries to the 40th Metro Manila Film Festival.^[27][28][29] The film was commercially successful and achieved the milestones for having the highest-gross on opening day of any local film^[30] and the title of being one of the highest-grossing local film of all time in the Philippines. The film received mixed to negative reviews from critics. Zig Marasigan from Rappler described the film in his movie review as "a brainless, hyper-stylized and utterly ridiculous family comedy."^[31]

Gonzaga released her debut studio album I Am Alex G. (2015) with the studio album's lead hit single, "Panaginip Lang", under Star Music. The studio album had a grand launch at Eastwood Central Plaza on March 22, 2015,^[32] and a concert,^[28] AG from the East: The Unexpected Concert, which was later on held at the Araneta Coliseum to support her studio album on April 25, 2015. She had another major project as the lead star of the fantasy series Inday Bote,^{[33][34][35][36]} a TV adaptation of the classic Filipino film of the same title.^[35][37] She also took hosting duties in the original, local dance competition show Dance Kids, alongside Robi Domingo.^[38][39]

2020–present: Return to TV5 during the COVID-19 pandemic

After the shutdown of ABS-CBN resulting from the denial of its application for a franchise renewal, Gonzaga returned to TV5 for a block time agreement with Brightlight Productions, and became one of the main hosts of noontime variety show Lunch Out Loud from its premiere in 2020 until 2023.^[40]

Film

Television

Music videos

Extended plays

Singles

Chart performance