senthia

Appearance
Senthia has a sleek, futuristic robotic body resembling a red turtleneck sweater and brown overalls with the Engineer emblem on the upper left chest. Her left arm is painted yellow and her right arm is red. Her shoulder pads (or shoulder pads) are red for her mechanical joints. She wears a two-layered (almost) knee-length skirt with a red bottom hem; the right side has a pocket. Her legs are black with orange parts in the foot area, including her rectangular orange knees, leaving only the upper thighs white. Her face is light and gray, with delicate features that give her an innocent and friendly appearance. Her ears are usually gray circles on either side of her head. Her right eye has an orange iris and a black "+" shaped portion, reminiscent of the iconic TF2 logo. Her left eye has been replaced with a red plate structure with a circular red light acting as a target eye. Her hair is, like Mimi-Sentry's, red.

Senthia can transform into different forms depending on the level of her sentry turret:

In its “LVL 1” form, its right arm is a powerful cannon that resembles a standard sentry gun.

In its "LVL 2" form, it carries two sets of Gatling guns with two belt-fed electrical cables connected to the rear of its device, similar to the main body of a Level 2 Sentry Turret. The rectangular shape of its knees features curved structures, but its edges retain the edges of the rectangular ones.
Finally, in her LVL 3 form, she has an additional set of rocket silos attached to her shoulders, making her more formidable and dangerous. The red trim on her skirt and upper thighs have black lines reminiscent of caution lines. Her hair is slightly shorter, with bangs that curl upward in front, and she sports grenades with orange accents on her ears. This form makes her a terrifying, powerful, and threatening, yet still formidable, fighter.

Personality
Senthia is a loyal and devoted daughter of the Engineer and is friendly with the rest of her family and the members of RED team, although she can be very protective and hostile towards the BLU team. She is also very curious and eager to learn new things, especially from her father. She enjoys fighting alongside her family and using her weapons to defend her team and territory. Her Level 3 form represents the pinnacle of her evolution, a true testament to the Engineer's ingenuity and her own ability to adapt and improve. Hence her Level 3 form, which can become extremely violent and lethal against any enemy at times, and can also act out of control. In this formidable state.