Can I ask what makes you think Huepow cares about Lephise? The only one I know who cares her very much is Balue - he even build a tower for her! The tower is unfinished at the beginning of DtP, though.
Off-topic : Judging by his vocal, I don't think Huepow is older than he looks like. But who knows? The manual only says Klonoa is a "boy". Maybe Huepow was born during/before the 100 days war.