Mayuka Masaki

Mayuka was a creation of Yuzuha (using her hair and Tenchi's) as a tool to abduct Tenchi in "Daughter of Darkness." Mayuka's human side was open at this time as she assumed that Tenchi was her father (and Yuzuha her mother). When ordered to capture Tenchi, Mayuka goes into her demon form and brings Tenchi to Yuzuha. When Mayuka is ordered to kill Tenchi, he is able to comfort Mayuka long enough to bring back her human form. Furious at these actions, Yuzuha kills Mayuka and absorbs her energy and turning her into a crystal. Tenchi later kills Yuzuha and once he returns home, Washu tell him and the others she is able to revive Mayuka only if they all agree to it. The gang all agrees to revive her as an infant, thus allowing her to celebrate Christmas with the gang.