[For the best since that'd definitely clue him in that something wrong. As it is, he's not really sure since he's also not really looking at Tadashi while he's talking about all of this just in case.] I never said he was a replacement for Baymax, just that there's a lot of him in Demo. There're just some people who can't be replaced.

[Demo can't replace Baymax, Baymax can't replace Tadashi. They can do a good job mimicking each other though. When Tadashi faces him again Hiro nods like it's not a bit deal to share this revelation.] His name's Heathcliff and he's pretty okay. Fred's house--you know those neighborhoods on the other end of town by the piers? The ones with the reeeeally huge mansions and stuff? Fred lives in one of those. They have a family-owned island and a helicopter and everything. Kinda makes more sense why he just hangs around campus and works as the mascot.