Alexander Usyk - a boxer, world champion
Vasily Lomachenko - a boxer, world champion
Oles' Buzyna - a writer, killed by Ukrainian Nazi in 2015
Vasily Verastiuk - the strongest man in the world
Andriy Shevchenko - a football player
These are all worth to be mentioned, there are no famous scientists, poets, painters, composers etc. in the Ukraine.
well, Klichko brothers are famous too as boxers, but they are nasty guys.