Oozaru (Great Ape)

This is the most primal transformation of the Saiyans, caused by a looking to a full moon if one still has their tail, although it is suspected that you can control or resist the transformation.
The beast-like transformation gives the user a power boost, multiplying their current power 10 fold.
Although some people suspect that you can control or resist the form, there have been no recordings of such. One of the most used moves by the Oozaru is the mouth laser, or whatever you call it. The move is just a large energy wave originating from the beast's mouth.
To unlock this form, you must become a Saiyan with a tail. Go towards Korin's Tower, and look towards the cube-shaped hill. Go to the top of the hill and approach the NPC. You can only speak to him when it is night time. Once you initiate the conversation, you must select the correct options until you are given access to Oozaru and Golden Oozaru. You have an infinite amount of chances to get the correct answers. They can be found in the button under the Transformations button. Golden Oozaru is required to unlock Super Saiyan Four.
This form was one of the original forms that you could get in the game. It was released in V3 (maybe prior to V3). Nowadays in V6, it’s stated that you can now control the form and master the form to the point of being able to keep your human state whilst using its power. However along with this “Wrathful” state you also gain a bigger power boost.