It's Grusto!

"Hey kids!" a puppet popped out from behind a conveniently placed large object.

"Grusto!" the chorus of ethnically diverse children shouted in unison.

"That's right! It's me, Grusto! Now what's this I hear about somebody wanting to tell a lie?"

The smallest and most ethnic of the kids stepped forward, "I'm sorry, Grusto. I thought if I told a lie, then people would like me better."

"Mbatu, where would you get an idea like that?"

"You, Grusto! You're just an old guy hiding behind a large object."

"What? No! Don't listen to anything Mbatu says, kids at home. He's a liar!"