Actually, the fact that they used katakana for the first, kanji for the second and hiragana for the third makes it more likely these are real. Writing in katakana creates a 'cooler' image, which it seems like they're trying to project with the grass monkey. Hiragana has a more 'cute' / 'childlike' image, which is the theme of the water starter. It's a very Japanese thing to do so if it's fake then whoever did it put a lot of thought into it.