Ronaldo and Messi are legends of the game, but even they will never be able to break these records.
#1 Most championships - 3 (Pele)
Brazilian legend and arguably the greatest footballer of all time, Pele, won the World Cup in 1958, 1962 and 1970. He remains the only player to have ever lifted the prestigious trophy on three occasions.
Most goals scored in a single edition - 13 (Just Fontaine)
This is probably one record that will never be broken by anyone, let alone just Messi or Ronaldo. Just Fontaine wrote his name into the record books with stunning performances in the 1958 World Cup. Fontaine scored 13 goals in just 6 games in the competition, more than double anyone else's tally.

Oldest goalscorer - 42 years, 1 month and 8 days (Roger Milla)
Roger Milla, one of the greatest players in World Cup history, broke his own record of being the oldest goalscorer in the competition when he hit the back of the net against Russia in the 1994 World Cup, aged 42. Cameroon though would end up losing the game 6-1.
Most goals scored - 16 (Miroslav Klose)
German striker Miroslav Klose represented his nation in four different FIFA World Cups (2002, 2006, 2010, 2014), notching up 16 goals in the process and winning the Golden Boot in 2006.

Most World Cup final appearances - 3 (Cafu)
Cafu, considered by many to be one of the greatest right-backs of all time, represented Brazil in 4 FIFA World Cups (1994, 1998, 2002, 2006) and played in 3 finals (1994, 1998, 2002). He is the only player in World Cup history to have played in 3 different World Cup finals.