Sarah

Sarah is a cybernetic android who's currently dating Soul Tronian. She has outstandingly advanced A.I. She was originally built by Arkim to serve as his girlfriend and personal servant. However, she came to consciousness and escaped (after sustaining many injuries). Bat-Boy and Skeletron took her in from the streets and repaired her.

BIRTH:
Sarah Tronian was made in 2018 under the name Betty by Arkim to be his girlfriend. Arkim had a shortage of servants due to constantly lending them to The Ameshint Robot and his recent battle with Bat-Boy and Skeletron. Therefore, he also added the responsibility of being his personal servant.

BEING ARKIM'S SERVANT/GIRLFRIEND:
Betty would usually make and test weapons for Arkim. Other than that, she would unknowingly help Arkim with his crimes.