Apart from the 4 standard static avatars to read out your recordings,  there is now a facility to customize your avatar's appearance . You can create customized avatars and  use them instead of the static avatars.

The Avatar creation page is accessible from the My Recordings page. Before creating any new avatar, you need to specify a name for it. Once a custom avatar is created, you can go to the Select Avatars page and set the male and female avatars.