There is no information on this Moshling just yet but keep checking the Daily Growl for information.
You should keep checking the Daily Growl on the Moshi Monsters website for more information on the secret Moshlings. Currently there is no information about the 'Secret 3' Moshling.
You can get secret 2 by completing the first super moshi mission on moshi monsters.
bonkers is secret number 3
There is no secret Moshling 3 at the moment. Hopefully there is one soon.
Secret 3 is Blingo Secret 4 is Dustbin Beaver
there is a secret code to get it on moshi mag.3 plus add me star8917
Secret 3 (Blingo): Special code (unknown) Secret 4 (Dustbin Beaver): Unknown P.S I'm on Moshi Monsters and my name is mollygos so you can add me if you want!
Practice patience until it is added to 'the game'.
Secret 3 is: 103 Blingo the Flashy Fox [Secrets] Ultra Rare
Secret 3 is Blingo and to get him you need to buy the book called Busters Lost Moshlings.
There's no information on this Moshling yet. Keep checking the Daily Growl for information on future Moshi Monsters updates.
There are actually 4 moshlings in the Secrets set on Moshi Monsters. Secrets: Dustbin Beaver, Blingo, Lady GooGoo, Roxy