His agent shared a statement saying that the family of the French TV personality, an eccentric French television personality, had died Tuesday 28 December surrounded by loved ones.

French media reported that Grichka was in intensive care at a Paris hospital after he contracted Covid-19.

Source close to the Bogdanoff brothers stated that neither Grichka nor Igor were vaccinated against coronavirus via Le Monde.

The Bogdanoffs were born in 1949, and descend from European royalty. They first appeared on TV in 1978, presenting the TV series Temps X through the 1980s. This was the first country-wide science fiction series.

They appeared on numerous science programs, mostly about science fiction and space.

Grichka and Igor were involved in “The Bogdanoff scandal” in 2001. A series of papers written by the brothers on what they believed occurred during the Big Bang were published later in peer-reviewed scientific journals despite the fact that a later report found their theses had no scientific value.

The Bogdanoff brothers have become a popular figure in the cryptocurrency community in recent years. They appeared in 2020 on The Masked Singer in France.

Although the twins are well-known for their prominent chins and lips, they have never admitted to having undergone any type of plastic surgery.