Five actors portrayed the character of PK (aka P.K. aka Peekay aka P.K. Newborn aka Peter Philip Kenneth-Keith) at five different ages: Brendan Deary as an infant, Guy Witcher at age seven, Simon Fenton at age twelve, Stephen Dorff at age eighteen, and Nigel Ivy as P.K. Newborn. The character is apparently not known at all as Peter Philip Kenneth-Keith in the source novel by Bryce Courtenay.
The nick-name of Kark von Vollensteen (Armin Mueller-Stahl) was "Doc" whilst the nick-name of Peter Philip Kenneth-Keith was "PK" or alternatively "Peekay". "PK" or "Peekay" is a reference to the character's earlier nickname of "Pisskop" which is a word from the Afrikaans dialect and translates into the English language as "Pisshead".
The Power of One (1992)'s storyline featured story elements related to the sport of boxing. The film's director John G. Avildsen had previously directed Rocky (1976) and The Karate Kid (1984), two movies which were publicized in slogans and taglines for The Power of One (1992) declaring that the movie was "From the Academy Award-winning director of ROCKY and THE KARATE KID". Avildsen also directed The Karate Kid, Part II (1986), The Karate Kid, Part III (1989) and Rocky V (1990), with the latter two titles being shot in consecutive years. In total, of these above-mentioned titles, Avildsen has directed three karate titles and three boxing titles, totaling to six heavyweight movie titles in this genre altogether.
Tonderai Masenda played a character, 'Tonderai', who had the same first name as his own, whilst Sir John Gielgud portrayed a character, the headmaster 'St. John', who had the same 'John' name as his own.
Some movie posters for the film featured a long text preamble that read: "A boy, orphaned in the land he loved. In harmony with a people that were not his family. Challenge developed his fists. Outrage awakened his courage. In the struggle for change . . . In the pursuit of freedom . . . One person can make a difference".