Newcomb, a journalism major, will go before the Rules and Judiciary Committee of Student Congress tonight for approval to be appointed to the post.
Newcomb has been a member of the Student Attorney General's staff for 14 months and has been a special investigations associate student attorney general for the last four, Matthews said.
"He is unquestionably dedicated to the office and is interested in it for the right reasons," Matthews said.
Newcomb was unable to be reached for comment Monday night.
Matthews said Newcomb is the best positioned to protect the interests and rights of the student body -- even when it comes to questions about the Honor Court.
"(Newcomb) has a healthy respect for the tradition of student self-governance and has an eye toward making it better," Matthews said.
In light of recent debate about the future of UNC's student judicial system, Matthews said he and Newcomb have held several discussions about a possible overhaul of the system.
"This is going to be a reform year, and I think Brad recognizes that," Matthews said.
"He is very intent on making sure every counsel is above and beyond providing adequate defense to any student."