what's up with that ...
Muno (the tall red one) and BroBee (the short striped green one) are old characters from a performance art/music group from the late 80's.
The designer joined up with some other music artists, bands & child development experts/psychologists to develop that show.
BroBee's name used to be Broccoli Bee, though. Muno's name stayed the same, I think. He was designed to look like a alien PICKLE.
(*I think there was a FOOD related Background story to the show they used to have, can't remember exactly.)
+ Little kids don't think like older folks do, so it doesn't look like "that" to them.
Each to his/her own. 
Personally, I probably wouldn't like the show all too much,
IF my youngest/4.5 yrs old would have found some other catalyst that she liked better to start TALKING.
She LOVES that show! and NOW = she's SINGING the songs = aloud, and on her own/when the show's not on.
She'll even sing one line, let you sing the next, back-and-forth ... it's just amazing!
+ She's counting and clearly saying "please", "thank you" & "you're welcome", now = just like in the show. There's all sorts of good manners & safety stuff in that show, too.
+ Her dancing has
greatly improved too!
ALSO, the show's reeeally into healthy eating & trying new foods = which is super awesome for my 6.5 yr old that has oral food aversion & sensory integration dysfunction = she lives on a liquid diet.
2.5 straight YEARS of therapy & special schooling, counseling, testing = resulted in 20-25 MUMBLED words, that she could have cared less if she got right or used at home at all!

It takes a goofy TV show, to get her to really start vocalizing/singing & interacting.
So hey, I'll live with it. And I am just glad she's talking now.
I printed out the lyrics to their songs, we sing together when the shows aren't playing ... I run my finger under the words, like a sing-a-long. I hope it'll help trigger some reading skills. I dunno = anything to help at this point, ya know.
For me, out of the Yo Gabba Gabba characters, I find the Pink Flower Girl, "FooFa", the most "annoying" = can't pinpoint WHY exactly. She has a very high pitched, squeaky voice. I dunno. ... I like PLEX the robot & DJ Lance best of all = they're funny.
Personally, I like MAISY, MUCH MORE ... but she hardly talks at all & when she does, it's all mumbles. Sadly, that's not a good option for my little Liz.
I find Wubbzy a bit alerting for my ADHD 6.5yr old. ... but she is certainly cute, that's for sure.