Just reading the latest Trek novel, and it dealt with the Horta, and it got me thinking: there was a special Exocomp DOff as part of a reward thing about, oh, 18 months to 2 years back. And there's an Exocomp pet as well I recall. We also have Horta pets. So we need a Horta DOff as well.
Obviously, they should be a very rare quality Geologist. It's just logical!
As for traits, clearly they'd be Resilient. Perhaps telepathic? Stubborn? Resolve? Efficient? Who knows.