PIPPO IS THE BRAIN OF ZANTA CROSS.
PIPPO WAS REALLY A BOWLING BALL LIKE THING, AFTER DORAEMON TOOK OUT HIS GADGET TO CALM DOWN PIPPO HE BECAME A BIRD. THE TRUTH IS PIPPO'S REAL NAME IS JUTO. NOBIT NAMED HIM PIPPO.RIRURU [THE ONE HE LIKES THE MOST, NOBITA IS ALSO ONE OF HIS LIKES] HAS HELPED HIM ONCE. THIS IS HOW SHE HELPED: WHEN PIPPO WAS SINGING THE ROBOTS ATTACKED HIM. RIRURU FIXED HIM . ONE OF HIS STAR WAS BROKEN[I DO NOT REMEMBER WHICH STAR, MAYBE YELLOW]. SHE GAVE HER STAR TO HER AND IT TURNED GREEN TO SHOW HER KINDNESS TO PIPPO.