Way Big has always been a red, white and black color.
In the orignial series, Way Big had a lot more spikes on him, and had more of the color black on him.
In Ultimate Alien and Alien Force, his look is more simple with less spike, and more of a white color all over his body.
In Omniverse, Way Big's eyes on his cheeks return and he has three red lines on his neck. His blades on his shoulders have also returned. He is more muscular. He also has fingerless gloves like Four Arms.
Due to him being 120 feet tall, Way Big can easily overpower his opponents because he packs enough power to beat an entire army. His size also grants him incredible strength and speed. Way Big has also shown great durability, withstanding fire from enemies while barely even feeling them.
Way Big also has super speed, with his super speed he can create tornadoes or if he is in water; a whirlpool.
Way Big is able to shoot a cosmic ray. He does this by crossing his wrists together, with his right forearm vertical and left forearm horizontal in front of it and the thumb edge of his hands facing his body, to shoot from the outer edge of his right hand a powerful blue colored ray.
Way Big can be a hazard to allies in the area, if he falls.
Way Big's size also gives him a slight mobility issue since he has to be careful where he steps and avoid buildings and people around him. And Way Big also easily gives his location away due to his size.