M'gan pov
Martian bodies are weird.
They don't need anywhere here as much sleep as the average human does even someone like Batman and his God awful sleep schedule of half hour power naps every 3 weeks or something can't hold a candle to literally what I was planning on being a couple hour nap to be 15 minutes. Now that I am wide awake after sleeping for what my memory supply to be a oversleep of about three whole minutes.
I get all antsy due to the fact that there's nothing else to do other than reenter my mind and do other things, Martian bio ships are supposed to be able to reach near light speed thanks to some shenanigans about absorbing light like how kryptonians can just stand in the rays of sunlight and can somehow produce ridiculous amounts of energy from their own ass apparently, cuz really think about kryptonians for a second if you were to lay down in a field for Sun and you somehow get 24 hours a day for around 30 years you should not be able to do even half of what Superman would be able to do in a day when all he needs is a couple minutes of sunlight. Based on this information it be wisest if the laws of physics were to be renamed the suggestions of physics.
***
With nothing else better to do I decide to try and make more forms for me to use while I'm on Earth. Already I just have my face identity the one that I would be most comfortable in as of right now, however Martian Manhunter is able to use shape shifting into a more monstrous bigger form in order to put both leverage of his mass and increased size to good use showing that even though Martian Manhunter is strong, in a bigger form he should be even stronger.
With this thought process I decide to start creating a combat form.
The first best idea would always start with the base when your shape-shifting therefore I start out with a 3 ft tall gorilla like posture with all of my limbs on the ground with massively enlarged arms and hands knuckle walking. With a base decided I then choose to create extendable limbs that have the flexibility of an octopus with a basic human hand at the end allowing me to squeeze through just about anywhere and still be able to grasp what I need to take. I decided just two of them should suffice for right now since I can always make more later. I decide to have armor plating similar to that of a beetle specifically the Hercules people making me almost look like a cross between a heracross and its mega evolution and a gorilla. The idea I've had for this form is simply to be the generalist, my basic template if I need something specific for that situation I can always shapeshift so that it's something else if I need to get to some place smaller I'll either extend one of my tender limbs to try and grab it or shrink myself down into a more manageable size. if I'm fighting enough on his that is even larger or ridiculously strong I can shape shift my Max size being that of 30 ft or about 10 m. With my Max size I would definitely have a massive increase in strength and keep my Max speed although my flight won't be able to perfectly compensate for the massive increase in size making me overall less agile meaning worse turns when at Max speed.
***
Time continues to pass slowly for me due to the fact of my increased perception speed allowing for what would normally be about a 3/4 of an hour trip to take hours. As I feel a pulse from the ship that I have boarded notifying both me and my uncle that we are reaching Earth's atmosphere. I decide now would be the best point in time to reveal myself to J'onn.