Doesn't master control allow the user to stay as a species as long as they want? You know with the Omnitrix originally intended to be used for diplomacy and intergalactic customs.
This was because the user's DNA might be overwritten by the DNA of the transformed species, causing them to be unable to transform back permanently. Therefore, to protect the user's DNA, the omnitrix specifically had this protection mechanism.
OMNITRIX (DC)
Anime & Comics · Baph0met
Fits so well...
"Hehehe" Dulio starts laughing nervously and looks in the direction the waitress left. "Snails and frogs." He mutters and swallows hard.
Reincarnated with Fairy Tail System! (DxD)
Anime & Comics · Eden_of_Kovir
Dulio?
The teenager is about 14 or 15 years old, he has short blonde hair with two slightly longer strands framing his face, green eyes that shine with joy and a strange piece of jewelry that looks like a teardrop in the center of his forehead.
Reincarnated with Fairy Tail System! (DxD)
Anime & Comics · Eden_of_Kovir
Pleasure Magic
[Han Daewi | The God Of High School Chosen]
Fate/Scp: Epic of The Demiurge
Anime & Comics · Demon_King22
"Watermelon Torchwick." I repeated the name he apparently adopted me with. I tossed the papers back onto the table. "Was 'Wilhelm' apparently too difficult a word for you to spell."
A Nascent Kaleidoscope.
Anime & Comics · AStoryForOne
"Wanna make babies?" Kuroka suddenly blurted out, staring right at me.
A Nascent Kaleidoscope.
Anime & Comics · AStoryForOne
Jehovah, Allah, Yahweh, The Great Will, The Ein Soph and Monad are also names in which he can be known
"For the moment it won't but it is best to stay vigilant. Tell the others to stay alert." God said to them.
DxD: King of Salt
Anime & Comics · Lust_Demon_Samael
Prototype of the devil
"Your name shall be Azazil." God said to the girl with Pinkish hair.
DxD: King of Salt
Anime & Comics · Lust_Demon_Samael
High-grade bitch!
COTE: Hikigaya Hachiman In The Classroom Of The Elite
Anime & Comics · JYouyi