Originally Posted by Manach
The story of Cu Chulainn is one of foundational myths in Ireland, akin to Romulus for the ancient Romans or Achilles for the Greeks.
I'd recommend The Great Course's "The Celtic World" and Nora Chadwicks "The Celts, for context.
How revelent he is or if being judged by present day standards qualifies him as a Hero, is prehaps a subjective opinion.
However, as this is rather a lo-fi thread please consider providing evidence for Cu Chulainn's status or your opinion.
Has its myth were dealing with I believe that Cu Chulainn was maybe a version of an earlier story possibly from greece or persia translated and the transformed over the course of many years into an irish legend.
I don't believe he was an irish legend, I've yet to read were he defended the irish against any outside nation. To be fair to all he slew in the, the tain, well he was well armed to a degree that you think he was an apache helicopter fighting farmers who only possessed pikes. Again its a myth its an oral story that was translated probably for centuries before it was written down. You couldn't even say for certain whether he was called Cu Chuliann or its a bastard version off another name.