She was born Helga Lina Stern on July 14th 1931 in Berlin, Germany.
She was enrolled in dance classes from the age of 4. At the outbreak of world war II she moved with her parents to Lisbon, Portugal, where she began working as an acrobat and dancer in the circus at the age of 8, and made her film debut at the age of 10. She made several more films while in her early teens and became a serious actress at 16. Following several busy years in Portuguese films in the early 1950's, including some lead roles, and at a time when most young actresses would be at their peak, Helga took a break from acting in the latter half of the 50's. The reason for the break is unknown, though she has said that in the 60's she was working as a single mother, which maybe provides some explanation.
In 1960 she moved to Madrid and relaunched her career, finding immediate success as a leading actress, mostly in peplums, eurospies and westerns, dividing her time equally between films shot in Spain and Italy.
In the 70's she became one of the queens of Spanish horror films, and it seems to be these that she is best known for today.
In the 80's and 90's she appeared most frequently on television, but also appeared in 2 early films from director Pedro Almodóvar.
Helga is still living at the time of writing and resident in Argentina. Now in her 90's, she still looks beautiful and was still appearing as an interviewee in documentaries as recently as 2022.
- Kill or Be Killed .... Dancer (credited)
1951 - El gran Galeoto .... Adelina (credited as "Lina Elsa Estern")
- El negro que tenía el alma blanca .... French actress (credited as "Elga Lina Stern")
- La trinca del aire .... Nati (credited as "Helga Lina")
- Saltimbancos .... Delmirinha (credited)
1952 - Duas Causas .... Maria (poster credit - role unconfirmed)
- Madragoa .... Clara (credited)
- Nazaré .... Maria da Nazaré (credited)
1954 - O Cerro dos Enforcados .... Leonor de Lara (credited)
1961 - Alerta en el cielo .... Betty (credited)
- Il conquistatore di Maracaibo .... Moira (credited)
1962 - Canción de juventud .... Elisabeth (credited)
1963 - Gli invincibili sette .... Lydia (credited)
- Horror .... Miss Eleonore (credited)
- Las gemelas .... Maria's mother (credited)
- Rocío de La Mancha .... María Luisa Vargas (credited)
1964 - Donde tú estés .... Nicole (credited)
- Ercole contro i tiranni di Babilonia .... Tanit (credited)
- Gli invincibili dieci gladiatori .... Daliah (credited)
- Il trionfo dei dieci gladiatori .... Queen Moluya (credited)
- La rivolta dei sette .... Aspasia (credited)
- Rueda de sospechosos .... Elena Colomer (credited)
1965 - Agente 077 missione Bloody Mary .... Dr. Elsa Freeman (credited)
- All'ombra di una colt .... Fabienne (credited)
- Amanti d'oltretomba .... Solange (credited)
- Golia alla conquista di Bagdad .... Fatma (credited)
- L'ombrellone .... Pucci (credited)
- Operazione poker .... Diana (credited)
1966 - Cifrato speciale .... Luana (credited)
- Der Mörder mit dem Seidenschal .... Prisca Sampton (credited)
- Kriminal .... Inge / Trude (credited)
- Missione sabbie roventi .... Yasmin (credited)
- Missione speciale Lady Chaplin .... Hilde (poster credit as "Helga Linne")
- Password: Uccidete agente Gordon .... Karin (credited)
1967 - Mister X .... Gloria (credited)
1968 - Brutti di notte .... Ursula (credited)
- Caccia ai violenti .... Deborah (credited)
- Colpo sensazionale al servizio del Sifar .... Elizabeth Antinori (credited)
- Il marchio di Kriminal .... Mara Gitan (credited)
1969 - Così dolce... così perversa .... Helene Valmont (credited)
1970 - Buon funerale amigos!... paga Sartana .... Mary (credited as "Elga Line")
- I Leopardi di Churchill .... Marlene Schulman (credited)
- Un caso di coscienza .... Lola (credited)
- Una señora llamada Andrés .... Frau Screicher (credited)
1971 - El apartamento de la tentación .... Baroness Rosaura (credited)
- Hay que educar a papá .... Ani (credited)
- L'arciere di fuoco .... Matilde (credited)
- Las melancólicas .... Patient (credited)
- Le Belve .... The Fakir's wife (credited as "Helga Linné")
- Los días de Cabirio .... Mia de Onassis (credited)
- Si Fulano fuese Mengano .... Sara (credited)
- Simón, contamos contigo .... Soledad (credited)
- Su le mani, cadavere! Sei in arresto .... Maybelle (credited)
1972 - Alta tensión .... Choni (credited)
- Experiencia prematrimonial .... Beatriz (credited)
- Los novios de mi mujer .... Aurora (credited)
- Mio caro assassino .... Mrs. Paradisi (credited)
- Pánico en el Transiberiano .... Natasha (credited)
1973 - Campa carogna... la taglia cresce .... Maria (credited)
- El espanto surge de la tumba .... Mabille De Lancré (credited)
- Fuori uno... sotto un altro, arriva il Passatore .... Zaira (credited)
- La orgía nocturna de los vampiros .... La Señora (credited)
- La saga de los Drácula .... Munia (credited)
- Las garras de Lorelei .... Lorelei (credited)
- Le guerriere dal seno nudo .... High Priestess (credited)
- No es bueno que el hombre esté solo .... Mónica (credited)
- Santo contra el doctor Muerte .... Sara (credited)
- Una muchachita de Valladolid (TV movie) .... Alejandra (credited)
1974 - Dick Turpin .... Anna (credited)
- El amor empieza a medianoche .... Luisa (credited)
- El chulo .... Doña Mercedes (credited)
- Fin de semana al desnudo .... Lucía (credited)
- La moglie giovane .... Yvonne (credited)
- Las correrías del Vizconde Arnau .... Esther (credited)
- Le protecteur .... Laetitia (credited)
- Open Season .... Sue (credited)
- Una chica y un señor .... The Doctor's wife (credited)
1975 - El asesino de muñecas .... Countess Olivia (credited)
- La venganza de la momia .... Zanufer (credited)
- Novios de la muerte .... Amelia (credited)
- Tres suecas para tres Rodríguez .... Ingrid (credited)
- Un lujo a su alcance .... A client of 'Beautiful' (credited)
- Una abuelita de antes de la guerra .... Marta (credited)
- Vida íntima de un seductor cínico .... Doctor (poster credit - role unconfirmed)
1976 - El alijo .... Mirna (credited)
- La amante perfecta .... Irene (credited)
- La casa .... Rosse (poster credit - role unconfirmed)
1977 - Cazar un gato negro .... Gabriela (credited)
- Cuentos de las sábanas blancas .... Duchess of Sacedón (credited)
- Hasta que el matrimonio nos separe .... Rose (credited)
- Las alimañas .... Sofia (credited)
- Makarras Conexion .... Paco's aunt (credited as "Elga Liné")
- Plus ça va, moins ça va .... Annie (credited)
1978 - Amore, piombo e furore .... Cottrell's wife (credited)
- Enigma rosso .... Mrs. Russo (credited)
- Il grande attacco .... Irene (uncredited)
- Las locuras de Jane .... Pepi (poster credit - role unconfirmed)
- Pepito piscina .... Nené (credited)
1979 - La boda del señor cura .... The Marquis's wife (credited)
- Memorias de Leticia Valle .... Margarita (credited)
1980 - El canto de la cigarra .... Manuela (credited)
- El consenso .... Asunción (credited)
- Estigma .... Sebastián's mother (credited)
- Mírame con ojos pornográficos .... Elvira Coro (credited)
1981 - Dos y dos, cinco .... Juanjo's mother (credited)
- Las alumnas de madame Olga .... Olga Gheorghieva (credited)
1982 - Don Baldomero y su gente (TV series) Eps. 8-12 .... Linda (credited in all episodes)
- Femenino singular .... Antonio's widow (credited)
- Laberinto de pasiones .... Toraya (credited)
- Los ritos sexuales del diablo .... Fiona (credited as "Martha Belton")
- Playa azul .... Norma Strauss (poster credit - role unconfirmed)
1983 - Black Venus .... Madame Jean (credited)
- Los caraduros .... Elvira (credited)
1984 - Las alegres chicas de Colsada .... Charo (credited)
- Una rosa al viento .... Berta (credited)
1985 - La comedia musical española (TV series) Ep. 10: "La Cenicienta del Palace" .... Irene (credited)
- Pulsaciones .... Marlene (credited)
- Una y sonada .... Concha (credited as "Elga Liné")
1986 - Turno de oficio (TV series) Ep. 9: "La mudanza" .... Martin's wife (credited)
1987 - La ley del deseo .... Antonio's mother (credited)
1990 - Blue Blood (TV series) Ep.: "Wo der Teufel wacht" …. Ana Zacharias (credited)
- Pareja enloquecida busca madre de alquiler .... Doña Dolores (credited)
1999 - Mallorca - Suche nach dem Paradies (TV series) 15 episodes …. Victoria Serrano de Velázquez (credited in 16 episodes)
2001 - El comisario (TV series) Ep.: "Secuestro" …. Wife of murder victim (credited)
2002 - ¡Ala... Dina! (TV series) S. 3, ep. 13: "Un té amargo" …. Amelie Laroche (uncredited)
2004 - Hospital Central (TV series) S. 7, ep. 2: "Aires de tormenta" …. Ernesta (credited)
2005 - Torrente 3: El protector .... Guest at the awards dinner (credited)
2005 - Vientos de agua (TV mini-series) Ep. 3 .... Madame (credited)
- Cine de barrio (2014 TV series) as interviewee
- Sitges - 51 Festival Internacional de Cinema Fantàstic de Catalunya (2018) Fan footage
- La Dama del Fantaterror (2020 documentary) as interviewee
- Marauders from the Mediterranean (2022 documentary) as interviewee
- Noelia Zanon interview (2022 documentary) as interviewee
- Porto de Abrigo (1941) IMDb as Young woman (Girl would seem a more likely description, since Helga was aged only 10)
- La mantilla de Beatriz (1946) IMDb as Clara
- Ladrão, Precisa-se (1946) IMDb
- Mitra Baby Face (1968) IMDb. I couldn't even find a poster for this one, so it may have been unreleased.
- Call Girl (1976) IMDb as Victoria
- El juglar y la reina (1979 TV series) Ep.: "La leyenda del Conde Niño". IMDb as Doña Leonor
- Que usted lo mate bien (1979 TV series) Ep.: "El Doctor J.". IMDb
- Verano azul (1981-82 TV series) 13 episodes. IMDb as Luisa
- ¡Qué grande es el teatro! (2000 TV series) Ep.: "La hermana pequeña". IMDb as Patricia
- Flores para Maika (2003 short film) IMDb
- Il segno di Zorro (1963) IMDb as Mercedes. Helga does not appear and there is no such role in the film.
- La máscara de Scaramouche (1963) IMDb with no role. There is no sign of Helga in the film.
- ¿... Y el prójimo? (1974) IMDb with no role. Helga is not credited and does not appear.
- El aliento del diablo (1993) IMDb with no role. Helga is not credited and does not appear.