Greetings from the Count, a fellow Spanish speaker after all the years of continuous living down here in Puerto Rico. As usual a few things.
1 Though I profess that my personal first language is English, I also speak Spanish fluently and can help out with any questions you may have.
2 My participation in this thread was requested by Hayes, and I decided to respond with what information I do have.
3 Hayes, sorry, but I don't have any pics of the Twiddlebugs. BTW: What did you mean to say in English in your previous post when you said "vuelta lijera"? Except for that, the only mistakes were in your exclamation at the end of the post. "Espere" should be "espero", the Spanish word of the verb "hope" conjugated for the first person singular in the present tense; and "ayudare" should be "ayude", the Spanish word for the verb "help" conjugated for the second person singular in a simple future tense.
4 As for information on the Twiddlebugs, since that's an English name, then it would be perfectly acceptable in Spanish as is. Proper names suffer a dual modality when coming from an English source to the Spanish language: they can either be translated into a new name altogether, be pronounced with Spanish entonnation which might change the name's actual and correct English spelling, or may be accepted as they're written correctly in English but pronounced with Spanish entonnation.
5 There are four Twiddlebugs in the main family: Theodore, a fat blue male Twiddlebug who's the father; Tessie, a tall violet female Twiddlebug who's the mother; Tina, a red female Twiddlebug smaller than her mom but taller than her brother who's the family's daughter; and Teddy, an orange-brown male Twiddlebug who's smaller than the rest of his family and who's also the family's son. They all live within a milk carton home inside the flowerbed outside the apartment window of Ernie and Bert's apartment room.
There are other Twiddlebugs in Sesame Street coloring books and storybooks and alike, but these four are the main characters who appeared on the show.
Hope this helps and have a good day.
Oh, and Luso, if you're interested... You might visit a thread in the Classic Muppets section of this forum called "Muppet Listings 8.0" started by myself with help from other sources like fellow forum members and other websites. This list contains the currently posted version of my efforts to gather a listing of all characters withing the Muppet Universe. Check it out and tell me what you think.
Again, hope this helps and have a good day.