- Helena is trained in Martial Arts and is also a trained dancer.
- Helena Mattsson played the lead character in Species - The Awakening, as the young woman Miranda who finds out and has to deal with turning into an alien.
- Sister of Sofia Mattsson and Mia Mattsson.
- Earned the respect of actor Steven Seagal on the set of Code of Honor due to her admiration of martial arts and the fact she trains in Judo since her childhood - she is a brown belt (2020). She is also interesting in Brazilian Jiu-Jitsu and has said she intends to start soon in BJJ.
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