Mbappe idolised Ronaldo while growing up and after joining Madrid from Paris Saint-Germain last summer, has equalled the Portuguese striker's tally of 33 goals in his first season at the Santiago Bernabeu.
Mbappe's double took him to 33 strikes in 44 appearances across all competitions, the same number of goals as his idol managed in the 2009-10 campaign.
The French superstar did not train with his team-mates on Tuesday ahead of the game but coach Carlo Ancelotti said the striker would travel to San Sebastian.
The Italian coach said that he was never in doubt that the 26-year-old forward was going to find his form despite a slow start in the Spanish capital after arriving from Paris St Germain, playing in a more centralised role up front.
Speaking on a podcast hosted by former Brazil striker Romario, Neymar blamed a clash of egos for the failure of the three stars to gel during their spell together at the French club.
Busquets, Fernandez, Griezmann, Mbappe, Messi, Muller and more feature as FIFA looks at the World Cup winners set to play at FIFA Club World Cup 2025.
Flick's tactical approach, featuring an extremely high defensive line, also seemed ripe for Mbappe and Vinicius to pillage with their pace.
Swedish prosecutors on Tuesday confirmed an investigation had been launched -- without naming Mbappe -- following an alleged rape at a plush Stockholm hotel on October 10.
Los Blancos take on their rivals without the French forward, ruled out for three weeks with a hamstring injury.
The Paris Saint-Germain superstar has won France's player of the year award four times in a row and been Ligue 1's top scorer in five straight seasons, but his contract dispute with the champions has dominated headlines all summer
Klopp also dismissed reports of Liverpool looking to sign Kylian Mbappe on loan for the season as the Frenchman looks to leave Paris St Germain, where he is at an impasse with the club as he enters the final year of his contract
Mbappe was sensationally left out of the squad on the eve of PSG's departure for their Asian tour, casting doubt on his future at the French champions
Mbappe sent a letter to PSG last month stating that he had no intention of extending his contract, which expires in 2024
"The time of violence must give way to that of mourning, dialogue and reconstruction," the team said in a statement posted on social media by the Paris Saint-Germain superstar
"My stay in Paris started with a very difficult adaptation, much more than I expected, even though I had people I knew in the dressing room. It was difficult to adapt, the change, arriving late, not having a pre-season, adapting to the new club, the new way of playing, new teammates, the city...It wasn't easy for me or for my family," he told BeIN Sport
"You know where he wants to go," said the City coach at a golf tournament in Spain on Monday, alluding to Spanish side Real Madrid
At the time, the club communicated that Mbappe had signed a three-year extension, but in reality it was a two-year contract (until 2024, therefore) with the option of a third year that the player himself could choose to activate, or not. Mbappe said in a letter to the club on Monday that he would not activate that option
Mbappe scored his 29th league goal of the season in PSG's final game on Saturday, a 3-2 defeat by Clermont, to finish top of the Ligue 1 scoring charts yet again
Asked about his future at the awards ceremony, Mbappe replied: "I will be here again next season."
