Hydro-Man
Hydro-Man is able to bodily transform himself into a watery liquid substance; he can access secure areas and small openings with relative ease; when his bodily mass is dispersed in this form it simply reforms, albeit slowly depending on how far apart the mass was. All of Hydro-Man's cells remain fully under his control when he is in his liquid state. Hydro-Man can also merge with and manipulate larger bodies of water when he is in his water form. He can increase his mass and cause tidal waves and tsunamis. He can turn parts of his body to liquid while retaining the rest of his human form, allowing him to slip from a foe's grasp or have projectiles like bullets harmlessly pass through him. Through great mental exertion, Hydro-Man can also turn into steam. Other examples of manipulating his watery form include firing off small streams such as a fire hose, shaping parts of his body into 'solid-water', constructs, and mixing himself with other compounds for different effects. However, this last example to defeat Hydro-Man can be using other compounds against him, since certain substances can either harden him (like cement or concrete), or make him feel sick (such as fire-extinguishers and chlorine). The Wizard enhanced his powers, through the use of sophisticated equipment. These artificial enhancements granted him increased and more precise control over bodies of water and moisture near him, which he demonstrated by absorbing nearly all the moisture in the Trapster's body. However, Spider-Man teamed up with Iceman and used Iceman's powers to solidify him into ice. Hydro-Man claims that he has not aged since he gained his powers. Hydro-Man possesses a certain degree of superhuman strength, and has been shown to be an exceptionally skilled fighter, and adept at using his powers for that purpose. In some incarnations, depending on the writer, Hydro-Man can form his forearms into weapons such as Sandman does, except that Bench's weapons are made of water. Bench has extensive experience in street-fighting techniques due to his experience as a criminal before his transformation. Though cunning, he has been consistently depicted by writers as a low tier henchman with little formal education and is often tricked into using his powers in ways that incapacitate him (as explained above). His normal attire consists of a black shirt and blue or green pants, as well as a costume invented by the Wizard.
Martian Manhunter
The Martian Manhunter has vast shapeshifting abilities that stem from complete control of his sub-molecular structure. He is able to take on any shape he pleases, often taking the human disguise of Detective John Jones. He can form shapes of objects or organisms alive, extinct, or imagined, and he has often been shown to grow an extra pair of arms to supplement his fighting abilities and his strength. He can become as stiff and unmovable or as flexible and malleable as he pleases. He can also alter his size or the size and length of his limbs. During his fight with Antares, J'onzz grew to the size of a building. When increasing his size, J'onzz often borrows mass from matter around him and incorporates it in his body, expelling it when he returns to his normal size. The Manhunter has even been shown to use his shapeshifting powers offensively during his fight with Ultraman. He has elongated parts of himself into bladed weapons during combat. His density is also variable and changes as he wills it. He can use this ability to become intangible and move through objects or allow attacks to fly by harmlessly through him or to become extremely dense to add more mass to his blows and increase his invulnerability. J'onzz's control over his own molecular structure also allows him to adapt his visibility, granting him the ability to become invisible at will. His shapeshifting abilities allow him to change his chemical composition. He was able to turn his skin into a thick exoskeleton of human bone in order to shield himself from a corrosive substance that would normally disintegrate his Martian physiology. In addition to these powers, he can also fly, and he possesses superhuman strength.