Tintin on the cover of The New Yorker?

This cover illustration appeared on the April 19, 1999 copy of The New Yorker. Art Spiegelman shows cartoon character Plastic Man gawking at Picasso paintings. But who’s in the crowd? Only two figures face the viewer. The one on the far left has a suspicious quiff and reddish hair. He looks like an adult version of Tintin. The other figure facing the viewer looks quite like Hergé’s self portraits.