Gemini realized his trick hadn't worked and simply reached up with his hand and allowed the concrete block to explode upon hitting it. 
"You have power, and you are from earth yet you show no mercy to those weaker than you!? You leave me with no choice!"

Suddenly Gemini allowed his full power to be revealed. As he released his energy a blood red aura erupted around him and filled the air. His eyes burned a bright crimson and became fixed in a determined stare. Taking two steps at a normal human pace towards the mans back, Gemini suddenly sprinted forward aiming a left punch at the back of the mans head. Gemini was well aware that the man was powerful, and was completely expecting the counterattack that was sure to come if he didn't land his attack.