Figure | Dragon Ball | Turles | Super Saiyan | Banpresto DBZ Gx Materia

Trules is the main antagonist of the series Dragon ball. He may look like Goku but is also the complete polar opposite of Goku. Trules is also a party of a private army known as the Trules Crusher Corps

Dragon Ball Z (from Dragon Ball Wiki)
Dragon Ball Z follows the adventures of the adult Goku who, along with his companions, defends the earth against an assortment of villains ranging from intergalactic space fighters and conquerors, unnaturally powerful androids and near indestructible magical creatures. While the original Dragon Ball anime followed Goku through childhood into adulthood, Dragon Ball Z is a continuation of his adulthood life, but at the same time parallels the maturation of his son, Gohan, as well as other characters from Dragon Ball and more. The separation between the series is also significant as the latter series takes on a more dramatic and serious tone. The anime also features characters, situations and back-stories not present in the original manga. 

Turles (ターレス Tāresu) is a Saiyan who was once a member of the Saiyan Army under the Frieza Force until he went rogue and ventured off into the cosmos where he conquered planets for himself alongside his group of henchmen known as the Turles Crusher Corps.

Aside from a different skin tone and retaining his Saiyan tail, Turles looks exactly the same as Goku does, even virtually identical height and build. Their slight difference in hairstyle is that Turles is given at least two "devil horns".

In the Dragon Ball Z: Anime Film Comics, it is stated that the reason why Turles and Goku look alike is that the facial patterns of each warrior are similar within the low-rank Saiyans. In the film itself, Turles says that he looks like Goku because they are low-class and because the low-class don't have many distinct physical looks.

(from Fandom Dragon Ball Wiki)