Hello guys, here is now an busty shark gal Neka's (who is my OC) very own: a giant baby seal like transformed mecha, Great Green Sealin.

Art drawn by I5HIMARU of deviantART.

Great Green Sealin (G.G.S.) belongs to me.

Also, here is the other verisons of this art, respectfully:
https://www.furaffinity.net/view/46504377/
https://www.furaffinity.net/view/46504389/
https://www.furaffinity.net/view/46504407

Note: This does not count as a OC but as a manned transformable mecha/submarine-like weapon, just wanted to let you know that ;) .

Mecha Profile:

Model Number: DVAT-I5H-238

Unit Name: Great Green Sealin (G.G.S. in short)

Unit Type: Advanced Self-powered 1st Gen. Assault Transformable mecha/Submarine

Mechanical Designer: I5HIMARU of DeviantART

Developed from: Data info is lost due unknown amount of time which thanks to war broke out.

Manufacturer: Data info is lost due unknown amount of time which thanks to war broke out.

Known Captains: Unknown captain (deceased), Neka Tigehark (recently)

Known Crew: unknown amounts of crew (deceased), Kyumi(helmsman)(recently), Treddy and his "family" (recently)

Overall Height: In submarine form (about size as a biggest luxury ship) to now a towering 100 meters tall baby seal-like mecha.

Bridge Accommodations: 1x in Bridge & Combat Information Center/Secondary Command Center, and lastly a Observation Deck.

Armor: Unknown alloy (virtually indestructible but except twice more stronger and thicker than Deeron)

Propulsion: 10x Large thrusters, 5x Small thrusters

Standard: EWAC system, Switch mode (yep, it can switch from either submarine nor mecha form), Radar/Sonar system, Mass Cloaking Device (which makes it virtually invisible 100%), 1x Big Hanger (including a launching catapult) (located on the lower middle stomach in seal form/front bottom in submarine form), and 1x Transporter room (yep, the same TRANSPORTER that the one seen from the Star Trek franchises, otherwise it's a futuristic matter transportation (or rather teleportation) device).

Power-plant: Galactium B.H.(black-hole) reactor (so yeah the same reactor like the one Deeron has but twice bigger)

Main armaments:
1x Multi-purpose 6-tube torpedo launcher (located on both front side bottom, 3 each), 1x 10-Tube missile launcher (located on top back), 12x Hidden Turrets gun (5 on each both top sides as a 1st row while the remaining 2 on both sided necks),
12x Hidden Multi-Barrel CIWS (5 on each both bottom sides as a 2nd row while the remain 2 on both shoulders), 1x Advanced auto deck gun (located on upper middle back), 1x Super "mouth" energy cannon.

Special weapons info:
Multi-purpose 6-tube torpedo launcher: The torpedo launchers has a several kinds of optional types of torpedoes: a normal explosive, high powered explosive, a spying drone, decoys, and the most unique of all, an Swimmer Delivery Vehicle (SDV) (even Nake himself able to fit in easily).

Super "mouth" energy cannon: This powerful energy powered weapons has two types of shots: a normal but a powerful energy blast from it's "mouth" but also it can shoot an dimensional beam to created huge portal, which it can fit big enough for transformable mecha to transport to another place but also possibly to another world(s) too.

Capable not only to swin in water/underwater but also can hover on the ground to fly to the sky or even in outer space.
This transformable machine has an unlimited amounts of ammunition of all kinds for weapons of this mecha via self-replicating nanites and metallic tendrils. It has not only a manual operation for certain weapons system but also has an automatic too, which it can do it on its own independently.

But the most unique of them all is that 4th dimensional space of all kinds in the following besides the Bridge Accommodations mentioned above: a computer room, laboratory, library, gaming arcade, kitchen(including a "miracle" food/drink making machine, it has same function as Sanshoku), gym, luxury bathrooms, master bedroom, living room, swimming pool, armory room, medical room, amazing luxury guest room(s) and lastly but especially of all, a mini factories(s) room including with an construct creation-like related technology(same special function as Sanshoku but unlike making food/drinks) which can create anything out of inorganic even but
especially machines of all kinds: there is 2 different types and size of mini factory room, a normal and a large. A normal type can do from any small to normal size electronic machines including human size robotic entities. It can move any finished, creation(s)-like "products" from either of these types (or both) to all the way to the special but a large storage unit, which is right next to the big hanger via special type of heavy duty, metallic conveyor belts on the floor, follow by mechanical arms of all kinds till it finished.
A large type can do from any size of average (car size) vehicle to a large ones but even a up to around like for an example a maxium limit size of a giant 25 meter tall mecha, but not only that...even it can create any other kinds of normal nor military vehicle of all kinds from either real life nor fictional types (even from anime, games, or movies).
But there is one but a special example of a certain 2 type of a mass-production, OC-like robots of mine due the results of the creations from the normal type: (coming soon)

History: It can from the same planet like the one Deeron does, the G.G.S. sail to an unknown journer since after the destruction of its homeworld. Many years later after the captain and its crew died of old age nor starvation, it was found by a shark gal Neka, who after a year later since that fated successful mission and retrired but now as a space explorer, and she learns everything about the overall origins, and functions of systems & weapons of all kinds via pre-recording videos.
Few years later since she becomes a naval captain by herself alone, she came to the planet for a reason so she has nothing else to do but to check it out till finally meeting with Treddy and his "family". Now with the combine power of this machine and the mecha Deeron, an effective force never to be messed with from now on.