They are Phineas and Ferb!
Answer a question:
1. Is Phineas an inventor?
2. Is Perry a platypus?
3. Is Isabella a girl scout?
4. Are Buford and Baljeet Indian?
5. Is Perry a secret agent?
6. Is Linda a singer?
7. Is Lawrence a doctor?
8. Are Isabella and Baljeet siblings?
9. Is Ferb a dentist?
10. Is Perry a dog?
11. Is Candace a teen?
12. Is Phineas American?
13. Is Ferb English?
14. Are Isabella and Stacey sisters?
15. Are Phineas and Ferb friends?