Frog Heinrich is an NPC in the BLACKSOULS series that appears throughout all three games. He’s always a frog – in BS2 he’s a humanoid frog.
Appearances | RHW
Heinrich makes his first appearance in Red Hood’s Woods in a certain part of the Lake Woods area. He’s a regular frog that can talk and he will talk to you for a bit if you interact with him, and he will also give Red Hood the Quickstep skill.
Appearances | BS1
The next place where Heinrich appears in the series is the first BLACKSOULS game, in the Tainted Bog area next to Princess Frog. He’s one of the frogs that roam around her, and if you talk to him while Red Hood is in the Holy Forest you can summon her to talk to him.
They will talk for a bit, recognizing each other. He will tell her to not “dream too much the next time”.
Appearances | BS2
In BLACKSOULS 2 Heinrich appears in the DLC3 part of the game, to be more specific he appears in front of the entrance to The Throne area in Winterbell.
If you talk to Heinrich, he will welcome you back home, and then you can tell him to look after your daughters. You can kill him and he will die instantly.