Akako one of Pixel's longtime old friends.  Being a long time old friend she is one a few people Pixel trusts at the beginning of the show. She is the one that convinces Pixel to become a guardian. Though she is part of a group called Saiyan Knights. Saiyan Knight is Solo person who takes on various battle missions directly from King Vegeta. 

Akako herself is a respectful type of person, though can get short tempered if ignored. Even though she is part of an elite squad she tends to be laid back alot. Though she does what she can for the team!

Here tone of voice is a mix of caring and tomboyish

Here is one person to reference to 

https://www.youtube.com/watch?v=hqq2ielX03c