There is no moshling named Myrtle on Moshi Monsters.
boy
Obviously a boy
The description for Coolio on Moshi Monsters does not say if Coolio is male or female, so you can decide for yourself if you want your Coolio moshling to be a boy or a girl.
boy because he sound like one
The description for Peppy on Moshi Monsters does not say if Peppy is male or female, so you can decide for yourself if you want your Peppy moshling to be a boy or a girl.
A girl, you can tell by looking at her.
Yes, Peppy the moshling is a boy. Bubba said, "He is smart that little Peppy". However, the description for Peppy on Moshi Monsters does not say if Peppy is male or female, so you can decide for yourself if you want your Peppy moshling to be a boy or a girl.
The description for Woolly on Moshi Monsters does not say if Woolly is male or female, so you can decide for yourself if you want your Woolly moshling to be a boy or a girl.
The description for Jeepers on Moshi Monsters does not say if Jeepers is male or female, so you can decide for yourself if you want your Jeepers moshling to be a boy or a girl.
The description for Tiki on Moshi Monsters does not say if Tiki is male or female, so you can decide for yourself if you want your Tiki moshling to be a boy or a girl.
scamp is a girl because she has a pink bow
It can be either and it is up to you, but it looks like a girl. The description for Honey on Moshi Monsters does not say if Honey is male or female, so you can decide for yourself if you want your Honey moshling to be a boy or a girl.