Marcus knows his time as a Bruin is ending. The senior's goal is to leave a legacy in the community that raised him.
"It's important to give back to the community," Wellnow said. "They support us, so I should support them."
This September, Marcus joined the NAMI Walk to fight against mental illness and participated in the Carnival Classic to promote the start of a new school year.
"Last year, we danced on stage," Wellnow said. "This year, I just worked a booth."
When he's not playing football, he's coaching football. Marcus usually coaches one team, but this year Kessler Elementary drew enough interest for two teams.
"I didn't want to coach one team and not coach the other," Wellnow said. "So, I decided to coach both of them."
Marcus finds volunteer opportunities on school bulletin boards and from Capital head coach Kyle Mihelish, who hopes Marcus' spirits rubs off on his teammates.
"He's a role model," Mihelish said. "The young kids look up to him and his peers look up to him."
Senior wide receiver Bradley Haller is one peer Marcus influenced.
"It's really inspiring," Haller said. "I want to show my community that I care."
Marcus does not mind late nights studying or sacrificing sleep, if the result is a strong example in his community.
"All those guys back in the day, I looked up to them a lot," Wellnow said. "I want to be that guy that the little kids look up to every day.