If we examine her name in the context of other languages, we find even more meaning: For example, 'noi' means 'we' in Italian. Noi has a name with obvious meaning, as 'noi' means 'little' or 'small' in Thai. Sisu's inner strength enables her to carry out her siblings' wishes, despite her insecurities.
Despite this, when the Druun attack, Sisu's older brother Pengu chooses her to wield the magical Dragon Gem. However, in Finnish, Sisu means 'strength of will.' Throughout the film, we see that Sisu feels weak compared to her brothers and sisters. Sisu, short for Sisudatu, doesn't seem to be a one-to-one translation from a particular language. Two of the film's more interesting names are those of Sisu the dragon and Noi the con baby.