During the years of competition in the Champions League, the duo Ronaldo and Messi have broken countless records that will be difficult for anyone to surpass in the long run. With Cristiano Ronaldo, the Portuguese star played 19 seasons in the Champions League with 3 clubs: MU, Real Madrid and Juventus, and won the Champions League title 5 times.
No player has appeared more in the tournament than Ronaldo with 183 appearances. He is also the person with the most goals scored in the history of the tournament with 140 goals. Besides these marks, Ronaldo also added other records. Specifically, CR7 is the only player to score in 11 consecutive matches and the only one to score in 3 finals. He also won the title of Champions League top scorer in 5 seasons (2007/08, 2012/13, 2013/14, 2015/16, 2016/17, 2017/18).
Meanwhile, Lionel Messi also has 19 seasons in the Champions League, 17 seasons with Barcelona and the remaining 2 seasons with PSG. During this time, Messi was crowned four times with Barca. In 163 matches, Messi scored 129 goals and assisted 45 times. Messi set a record for scoring the most goals in the group stage with 80 goals (71 of which were scored in Barca colors) and no one scored as many goals in the 1/8 round as the Argentine star: 29 goals. 
Messi is also the player who scores the most goals for a club in the Champions League with 120 goals in a Barca shirt. In addition, the current Inter Miami star has scored in 18 consecutive seasons, an achievement that no one else has. CR7 and Messi also share first and second place in the list of strikers with the most goals in Chamipions League history.
