Child characters for eLearning

I'm totally new to eLearning and I am trying to produce some learning material for my charity.

The  charity, Guiding Forces,  finds mentors from our great veteran network and places them with young people. The overarching principle for our mentoring is that everything is child focused/centred.

My idea for the character is for example when I want the child protection learning to be introduced I would like a child to present it and word it something like "I want to be safe and I need to know you understand what child safeguarding is about. If you complete this training you will learn how to keep me safe" or something along those lines.... might have to get a young person to word it for me.

where can I find some young people characters (cartoons I think would be best) and what do you think of my idea of the end user angle for delivery?

thank,

Chris