Goodness, this image I kept forgetting to scan and upload. I have no idea why, but I drew this a long while ago. Anyway it's Kao and Sylvia posing as a team. It kind of shows how big Kao is compared to Sylvia.
Kao Ninjaratzu and Sylvia Ratzu are copyright to Kao Ninjaratzu (course it's me and my wife/creator...'s mother)
Trivia:
1. The flame in her hand is just shadow aura. She could technically summon fire, but given she is a Dark Goddess and lives in a tundra, she prefers the cold. The flame in her hand is cold black fire.
2. This image would take place after Kao's final major adventure against the Intruders, as that's the point where Sylvia puts the past behind her once and for all and fully embraces living in her daughter's world, essentially going back to the personality her sisters knew her for. The Strong type who will give anyone a piece of her mind if not her scythe.
3. On the same token, at this point Kao has been embedded with all of Kao Ratzu's memories, so he fully remembers being Kiara and Siberia's father (even though technically Kao Ninjaratzu never was, since Kiara recreated him based on what she thought her father was like). It's complicated the story of Kao Ratzu and why he ends up ceasing to exist, but it had a lot to do with Sylvia herself forgetting why she created Kao as a servant and preferring for him to be a leader.
4. Technically at this point, Sylvia would be over 100 years old. Since the time moves at a different rate in her home world (the Ratzu realm) and Starmaninja, she ends up going from being the youngest (barring Suna) to being the oldest of the Ratzu sisters. Ironically, all the Ratzu Sisters except Suna end up being roughly the same age thanks to this discrepancy, though Sylvia and Solara, who are actual twins, end up becoming the veterans. Saluki spent the least time in the universe along with Suna and Siberia, so their ages remain the same and yes, that means Siberia by the end of the story is still a child (about 12 years old) while HER twin is in her 40s. Good thing Starmaninjians stop aging after reaching around 24 (the equivalent of being around 30 - 40 as a human in terms of maturity).