Balloon Boy / BB - The balloon boy looks like Bolbi from Jimmy Neutron.

Echo from hallway: "Slap, Slap, Slap. Clap, Clap, Clap."

Ș̴̸̛̱̤̱̬̹̬̘ͤ̾l̵̡͎̼̩͚͖̟͆ͣ̐̈̿̃̎̐a̸̺̘͕̺ͯͦ̍̌̔ͥ̒͗̀p̸̖̖̯̝͒͑ͨ̑ͣ̃̽̏̾ͅ ̯͚̝̦̘ͫ͞s̡̙̖̰̪̗̞̣̏̐̿̚͜͠l͎͋̅͋̅ả̶̲͙̻̘̖̒p̴̼̭̄̕͞ ̢̻̳̟͎͇ͦ͘ŝ͔͇͔̝̱̮̝͆̄̍̋̃͗̍l͖̺̪̱͆̐ả̶̡̭̻̍̉̊p̔͛̔̃̑ͥͣ͋ͤ҉̖̰̘̠̝͔̹͜ͅ,̸̸̛̗̬͖ͯ̑ ̬̲̣̬̬̻̠ͪͤ͢c̾͏͈͢l̵̤̰̓̈́̀̓͆̅̊a̟̦̤̯̮͓̠̩̮̿͋ͣ͞p̸̠̯̗̗̼̫ͧ̌̽̊̀̔̅̅͘ ͈̘͖ͥ͒́̾̕͡c̢̻͇͓̠̬̥̩̏̋̀l͍ͦͨ̉̌ͮȧͩͤ̀͐ͥͮ͏̡̻̲͓̫͈̗͠p̡̧̽̇̌͊̇͛̃ͤ̄͏̯̠ͅ ̩̩̞͚̫͔̯̼̏̑̅͆ͮ͘͟c̖̺̱̒̂ͥ̈́̿̐̓͋́l̓̆͐́͛̇ͤ̚͏̶̩͕͕a͓̬̭̗͎̹̝͌́ͨ̃p̜̭̘̲̭͈̪̊̋̽̓̂ͤ́