It's over, Krei. P-Professor Callaghan? The explosion... you died. No. I had your...

Hiro: It's over, Krei. [Without his mask, Yokai stands up and turns around to Hiro, revealing he is Callaghan] Hiro: [shocked] P-Professor Callaghan? The explosion... you died. Robert Callaghan: No. I had your microbots. [a flashback shows Callaghan using Hiro's microbots to protect himself from the fire earlier in the film] Hiro: But... Tadashi... You just let him die... Robert Callaghan: Give me the mask, Hiro. Hiro: He went in there to SAVE you! Robert Callaghan: That was HIS mistake! [Baymax comes over to Hiro, who is feeling betrayed and angry] Hiro: [indicating Callaghan, darkly] Baymax... destroy! [Callaghan looks at Baymax and Hiro, horrified] Baymax: My programming prevents me from injuring a human being. Hiro: Not anymore. [Hiro opens Baymax's access port, removing Tadashi's health care disc and leaving only the fighting disc] Baymax: Hiro, this is not what... [Hiro slams the access port closed, Baymax's eyes turn red] Hiro: Do it, Baymax! Destroy him!

Pro... Professor Callaghan? The explosion... You died. No. I had your microbots. But, Tadashi. You just let him die. Give me the mask, Hiro. He went in there to save you! That was his mistake! Baymax, destroy. My programing prevents me from injuring a human being. Not anymore. Hiro, this is not what... Do it, Baymax! Destroy him!