Hand out the little characters' cards to the students. Their goal is to figure out who is who.
Then, give each student a worksheet.
To find out whose who, the students have to use the following English: "Are you~ ~?" "Yes, I am" "No, I'm not." You might want to practice these questions/answers with the class a couple times.
The students have 6 minutes to mingle, and use English to get all characters' signatures. They write the students names on the handout. If they can find them all, they can get a prize.
I'm going to try this, as it seems like a good game. But, I'll change the characters, since they are copyrighted material.