I wish I'd thought to point this out sooner, but you could have used an existing robot for H ... and it seems that no one has drawn him yet, which makes me a little sad in some way.
... Still, your jolly bouncing bot is very cheering.
Perhaps the HedonismBot and the HappinessBot can be BuddyBots. No... BroBots.
Is that a happiness gauge on his tummy? He certainly looks like his happiness tank is full.