[Aachen]

To be clear, "intentional" should be "intended" right? Had to read this a few times (I'm also a non-native speaker, I wonder if that makes it easier or harder for me to understand a text with meaning-altering typos/mistakes) but I think it must be this.

[checkyoursudo]

Intentional and intended are both adjectives. They both mean intended. They are synonyms, so they can be used mostly interchangeably. However, one or the other may be conceptually more clear in various cases. As a native English speaker, intentional character is understandable to me. I likely would have written intended character, but I don't think that intentional here is clearly incorrect.