In Marvel Super Heroes Secret Wars #4 (Aug, 1984) characters from an undetermined alien planet are introduced, and recur through the remaining issues. A portion of their world had been used to construct the Battleworld (where most of the story takes place) and so the 'heroes' come across them during the course of events. One of the aliens plays a significant role at several points of the remaining story.
Nearly all of their dialogue however is scripted in an alien language:
Other than one of the alien names being transliterated (i.e., just pronounced as closely as possible using English sounds), I don't think any of it was ever directly translated into English. The Earth characters mostly voice their impressions of what the aliens are saying, some of which was assisted by telepathy.
Was this culture, language or script ever identified in the Marvel Universe? Has it been or is it possible to translate it?