Please show me painters' signatures named Engel

I used to watch a show when I was a kid (in the 90's) and it was played by puppets and the main character was blue and named Galileo. There was also a robot and a 2 headed guy that had one purple face and one green face... If anyone can help me I would really appreciate it this has been driving me...

OK I cannot remember the name of this show for the life of me. It had some tall green dinosaur looking thing as the main character I clearly remember his little friend name "bibble" who was a little colorful ball-type thing that wiggled around on the floor.. and made weird noises but did not...

I can't remember the name of this show. A girl named melody, wearing baggy tie dye clothes jumping on a piano and the beginning. I think she was trying to find where the music came from. Then they sang nick nack paddy wack... im going crazy trying to remember this!

My wife is trying to find the his show's name I have no idea what she's talking about can someone help?

My wife is trying to find the this show's name I have no idea what she's talking about can someone help?