Made out of 326 pounds of pure steel and lacking* an empathy chip, behold the Mimi-Sentry! She is a humanoid RED Mini-Sentry Gun from Team Fortress 2, created by Dell Conagher, the RED Engineer. This little missy is ready to be your eager personal assistant and/or bloodthirsty bodyguard! A Mann Co. Mercenary could always use an extra pair of hands on the battlefield just in case if your team are less than competent. She is afraid of Sentry Busters, however. 
She refers to RED Engineer as "Dad".