Maeko Matsuo is the head of Port Hanshan’s Elanus Risk Control Services security forces. She challenges you when you disembark on Noveria with your squad. Unlike her underling, Kaira Stirling, she is cool even in the face of your undiplomatically pointed guns.
She’s an ex-marine and with more than just a touch of Japanese about her name and expressions. This is a lot more human cultural reference than we’re generally given in Mass Effect which focuses more on all the cool aliens rather than the internal differences of the tribes of humanity.
She is voiced by Kim Mae Guest who has done a tremendous amount of video game voice work including Hana Murakami (Zhu’s Hope) also from Mass Effect and Dawn Star from Jade Empire.