Urban art
Jérôme Mesnager, born in 1961, is one of the first painters of the streets of Paris, and is known as the father of the l'Homme en blanc, the man in white.  This recognizable figure is known around the world and has appeared from the walls of Paris to the Great Wall of China.
Now, with regard to the figure in blue, I am stumped and at a loss to know the artist.  Please send me an email or leave a comment if you recognize this intriguing style.  With the two figures "floating" together, I wonder if the urban art was created simultaneously or one followed the other.

Update:  The figure in blue is by Julien "Seth" Malland 
'Julien “Seth” Malland is a world traveling, street painting, socially conscious individual roaming the far places of this planet. Sometimes based in Paris, the street artist took a three year journey around the world to bring his art to remote areas. At different locations he would spend time with the local people, then create cheery pieces displaying children and colors to “liven up” the communities.' (from visual news.com) - Thank you, Vreni
Jérôme Mesnager, art urbain
Rue Blainville
75005, Paris