I'd disagree. While they are similar characters, Nuparu and Mavrah have big differences. The one similarity they have is their interest in robotics, but for different reasons.
Nuparu is an inventor, while Mavrah wants to liberate robots and fight for their "rights."
Nuparu has no interest in Rahi, while Mavrah is obsessed with them, even more so than robots.
Nuparu still values her fellow Matoran and is willing to do her part in keeping people safe. Mavrah is willing to let Matoran die just to further his studies.