(UPDATE: Originally, I wasn't sure who first designed this particular design for female Splinter, but one of the comments soon pointed it out. Thanks!)

(Another commission by  rawslaw5 Here, we have my versions of two characters from TMNT, though the design for Splinter is based on the popular design by the artist known as Chochi! Now, as for the backstory of these two, here's some info, as well as an interaction between the two!~)

Armaggon: "My queen! You're looking as ravishing as ever! Care to see what I've done to our kingdom? (Gestures to the rest of the sewers, which are now covered in random scrap he got from the sea)

Master Splinter: (Giving a slight chuckle) "It certainly adds some color to the place. Now, then...care to spar, 'my king'?"

Armaggon: (Not detecting the playful sarcasm in her voice) "It would be my pleasure!"

And now, the bios...

Master Splinter: "When the Hamato Clan was still active, one of its most promising members, Hamato Yoshi, grew to care for a rat that had been adopted by his lover, Tang Shen. The rodent showed not only great affection for her caretakers, but also a surprising amount of intelligence, such as how she gained her name 'Splinter' (by using a wood shard as a weapon against a cockroach that got into the house).

Alas, the Hamato Clan was soon wiped out by the vengeful Oroku Saki and Splinter found herself on the run. She wound up in New York via boat and spent the rest of her days in the sewers before falling into a puddle of Mutagen.

Transformed into a more humanoid creature, Splinter dedicated her life to not only keeping the traditions of the Hamato Clan alive, but also plotted revenge against Oroku Saki's own clan: the Foot.

And soon, she would find herself caring for four other mutants. Specifically, four mutated terrapins. Once, she saw them as merely a new part of her efforts to revive the Hamato Clan, but, now, she sees them as her beloved sons.

Armaggon: With the creation of the Mutagen ooze, Baxter Stockman had wasted no time in seeing what effects it had on any creatures he could find. When his experiments were almost uncovered, he set about removing any trace that he had been tampering with the substance, even dumping barrels of it into the sea.

Most sea-life around it was mutated horrifically, unable to survive for long. However, a passing tiger shark wound up not only surviving, but becoming quite the powerhouse. Captured by Stockman to cover up his mistakes, as well as experiment on the mutation, the one that would name himself Armaggon escaped into the waters of New York.

Utterly prideful and confident in his abilities, as well as now sporting strength-enhancing armor he gained from the experiments he was subjected to, Armaggon seeks to make both land and sea part of his 'kingdom'...starting with New York's sewers. Most of what he does is just boast, though, leading to him making a fool of himself sometimes.

Through his encounters with the Hamato Clan, he's become quite smitten with Master Splinter, having become attracted to her after being defeated by the mutated rat. Since then, he's become more of an ally to the turtles, considering them part of his 'kingdom'.

https://www.furaffinity.net/gallery/predaking2000/
https://archiveofourown.org/users/B.....kerra_Hellmane
Discord: giganoto_5008

(Female Splinter design by Chochi)