Here’s another boss character from Youkai Watch Nintendo 3DS game and anime.
Just like Robonyan 28, this boss can’t be recruited or be friends with because it’s too powerful.
The same person that made Robonyan 28 made this model, It is made by Porarisu Karuedo.
Robonyan 3000 made his apperance in Yo-kai Watch Busters: Moon Rabbit Team.
Similarly to Robonyan 28, Robonyan 3000 might be based on Black Ox, recurring villain from Tetsujin 28, giant robot created by the mad scientist Dr. Franken Shutain and main antagonist of the HakuchŻ no Zangetsu theatrical movie.
You can download Robonyan 28 from here