The kids like dragon ball toys only because in the video games these characters fight and use different powers for beating the opponent. Therefore, a soft corner created in the heart of the kids and they want to meet such characters in reality, but as all we know that these characters do not exist in the world neither such kind of power anyone has. So you have given them dragon ball toys as a gift to your kids and make them understand all such things are fake and limit them only for playing do not find such character in real life.
When kids start growing, they want to learn a lot of things. Therefore, whatever they see anywhere, they will question you about it. If you give them correct answer then they will memorize it. A kid is a like a blank paper, you can write anything on it whatever you want. Therefore, when kids play the video games and see the different characters are fighting in the games. So they image that, these characters are also in real life and they prefer to search them in real life.
However, you have to make them understand that these are the fake characters which are only created for the game. But you can play with these characters in real life as well, but dummy dragon ball toys. There is a very famous video game, namely street fighter. There are many characters in this game, now you can purchase the dummy of those characters and give to your kids so that they could understand that all these are the fake characters which are only available for playing and entertainment.
Most of the kids believe still that these characters exist in certain countries and when they would reach at that country, they will meet them. So you have to make kids understand everything clearly. For the purpose of playing the dragon ball toys are perfect and even you can find the robot dragon ball toys which fight when you put the battery in it. So you can purchase the dragon ball toys at affordable price, from anywhere but It is better to purchase online because you get the reliable and durable product from the online website. Always take care of your kids and do not give a wrong concept of anything because they will follow the same thing in the rest of the life which you will teach them in this age.