Even though this is late, thanks for the pictures, ichigopara! I got my the most recent Disney Fan magazine with the Ride and Go Seek! a day or so after you posted the pictures. I didn't see this mentioned anywhere, but it says that the small orange monster, Rocky, (the merchandise in the first picture) is a character only in the attraction (not a direct translation).
Was he the only new monster for the attraction? Granted, I haven't seen the movie in ages, but there are a few monsters that I don't recognize from the merchandise in the magazine. Perhaps, they are in the California Adventure Monsters, Inc. attraction.