The Brazil international completed a £39m move to the Reds from Ligue 1 side AS Monaco on Monday afternoon.
Fabinho has signed a long-term deal with the Merseyside outfit despite being previously linked with Manchester United.
The 24-year-old will strengthen Jurgen Klopp’s options in the middle of the park following the disappointing of their Champions League final loss.
Fabinho was a key part of the AS Monaco side that won the Ligue 1 title ahead of Paris Saint-Germain in the 2016-17 season.
While his title-winning team-mates Kylian Mbappe, Bernardo Silva, Tiemoue Bakayoko and Benjamin Mendy moved on in the 2017 summer transfer window, Fabinho remained at AS Monaco for the 2017-18 campaign.
Speaking to Liverpool FC’s website about what qualities he can bring to the Reds team, Fabinho said:
“I believe I am a player that can organise the game well for my team. I play with a lot of intensity and I’m quite strong in man-marking.
“Unfortunately, occasionally I get some yellow cards for that but I think that won’t be a problem here. Hopefully I will have no difficulty in adapting to this type of football.
“I know that the type of football here is quite intense and physical but I think I got some of that while playing in France and I hope I won’t find any problems to adapt to this league.”
Liverpool FC haven’t won the Premier League title but finished in second place in the Premier League table in 2002, 2009 and 2014.
The Reds secured a top-four finish for the second successive season under Jurgen Klopp to ensure their continued participation in the Champions League.
Liverpool FC lost 3-1 to Real Madrid in the Champions League final on Saturday evening.
MORE: Man United latest news
MORE: Arsenal latest news
MORE: Chelsea latest news
MORE: Liverpool latest news