Simplify the following text for a Grade 14 native English-speaking person.
Original: In the Avatar Nick Mag Presents : First Edition issue by co-creators Michael Dante DiMartino and Bryan Konietzko stated that Sokka was originally designed to be much more low-key , but when his comedian voice actor Jack DeSena came in and brought liveliness to his character , they began writing towards that strength .
Simplified: Michael Dante DiMartino and Bryan Konietzko said that Sokka was originally designed to be much more low-key , but when his comedian voice actor Jack DeSena came in and brought liveliness to his character , they began writing towards that strength .