Jean-Claude Juncker, 66, the former Luxembourgish President and President of the European Commission, is well known for his offbeat, informal nature.
Brexit watchers might remember his warm greetings of Theresa May, including a kiss and a hug.
Or perhaps the 2015 EU summit in Latvia, when he greeted the Belgian prime minister by kissing his bald head before announcing, “the dictator is coming!” as Hungarian premier Viktor Orbán arrived, followed by a laugh, a handshake and a slap on the cheek.
He has always been outspoken, even of the institutions he works within.
When his replacement, Ursula von der Leyen, created the new position of “Vice President for Protecting our European Way of Life” with a view to upholding the rule-of-law, migration and internal security in 2019, Mr Juncker criticised her sharply.