"Lucas is a 9-year-old 4th grader. Lucas is an easy-going, and overall chill friend. He’s a bit of a pushover, being always willing to go on wacky adventures with his friends, though sometimes he tends to make jokes at the wrong time, causing some people to wonder what’s the limit of his humor. Despite his bold humor, he gets embarrassed quite easily."

Lucas' voice is laid-back and joking, but tends to get shrill when the situation becomes dire. 

Reference for direction, if you'd like it: https://youtu.be/Z22Nq4bTgns (but a bit younger)

Voice work is $1 per line. In this case, $9 is used because Lucas has 9 lines in the first episode.