Invent a new name, lifestyle, job, etc. Don't let your students look at other worksheet, each one must be confidential! Advice them to write in Capital Letters (so students can't recognize their partner's handwriting). Give them 5 minutes to fill in the activity and tell them to give it back to you. Then, mix them and ask for a volunteer. He/She will report the information and together with the other students, including the one who wrote the new profile, must guess who is it. Keep on repeating the activity with different volunteers.