Her breakthrough came in 2018 with Ecos del Corazón (Echoes of the Heart). Instead of just airing the 8 PM slot, Arias launched a “companion experience.” She commissioned a series of 45-second vertical clips for Instagram Reels showing the villain’s backstory, released a Spotify podcast where the "maid" character revealed secrets in ASMR whispers, and—most controversially—ran an AI-driven chat game on WhatsApp where fans could "date" the male lead.

: She has established herself as a professional DJ in the national electronic scene after training with prominent Chilean DJs like Dorian Chávez.

Consider a traditional sitcom: it employs dozens of writers, actors, crew members, and executives. A single episode costs millions and takes months. Noelia Arias, on the other hand, often writes, shoots, edits, and publishes her content from her smartphone in a single afternoon. Yet her reach can rival that of a cable TV show. This democratization of entertainment content is perhaps the most significant shift in popular media since the invention of the television.

Arias successfully bridged the gap between late-night novelty and narrative television, securing roles on prominent networks like Chilevisión and TVN. Her filmography highlights an ability to navigate various genres: Production Format / Network Role Highlighted Cultural Context (2009–2011) TV Series / Chilevisión Multiple characters (Cinthia, Sofia, Nurse)

In the landscape of Chilean entertainment, few figures have maintained the kind of enduring recognition and cultural resonance as . Known affectionately by her stage name "Licenciada Tetarelli," Arias became a cornerstone of late-night television and popular media during the early 2000s. Her career, however, is a fascinating study of how a media personality can evolve from a specific character into a multi-faceted professional in acting and entrepreneurship. The Rise of a Cultural Icon: "Licenciada Tetarelli"