OVA:_In the OVA series,Tenchi finds Ryoko as a mummy in a cave near the Masaki shrine.Later she ends up chasing him through his school,scaring the crap out him.After Tenchi cuts off Ryokos hand with the master key,she loses one of her gems and sinks into the ground and disappears.Leaving Tenchi's school in flames and almost pieces.Ryoko loves Tenchi like Aeyeka does and the two end up fighting all the time.Ryoko can fly,teleport to places she's already been to,create a light sword,hurdle balls of energy,pass through walls,and on top of all that,has superhuman strength.She was created by Washu who prefers to be called mom by Ryoko.In the OVA series her voice is done by Celeste Burch.In the T.V. series her voice is done by Petrea Burchard.

TV:_In the T.V. series,Ryoko crashes Ryo-Ohki after being chased by Mihoshi. As Tenchi is walking to school,he notices the crash and runs over to see what's goin' on.Later on,both Ryoko and Tenchi are chased by Mihoshi in her armored suit.After that,Ryoko is pretty much the same except that she is alot lavier and gets drunk a little more often.

OVA and TV:_Ryo-Ohki is pretty much the same in both series.She's Ryoko's space ship and companion.Ryo-Ohki can fly (she demonstrates this for Tenchi in OVA ep 10:I love Tenchi)and can pass through walls like Ryoko.Ryo-Ohki was also created by Washu.In both series,Ryo-Ohki spends alot of time with Sasami.Together,the two are the cutest things in the whole Tenchi series.Ryo-Ohki's meow is made possible by Marie Cabbit in the OVA series.