Can someone be charged with battery if the person injured does not wish to press charges?

Six months ago my house had been raided due to drug trafficking offenses made by a family member. I had also been taken into custody for questioning and I was also asked about the stitches I had on my face from recently being head during a fight. I giggled it off and acted like it was nothing saying absolutely nothing about what happened. A detective asked, "What, did you get in a heading competition or something?" and I laughed and said "Yeah, something like that." They seemed to take no note of it. Now six months down the road, drug charges have been filed on him but so has Substantial Battery-Intend Bodily Harm 940.19(2), a Cl I Felony. Besides that I believe they don't have sufficient information to charge him with that, I thought that the charge could only exist if I decided to press it. In reality, I want him in least trouble as possible. Any word if they can do that without my consent?