"You were right about one thing, Reclusiarch. The negotiations were short."
- – Ivanus Enkomi aide-de-camp
Ivanus Enkomi is a Chaplain of the Minotaurs and the dude charged with representing the Chapter's interests in stead of the Chapter Master when dealing with other servants of the Imperium, which is probably for the better.
There isn't much lore about him, but what we have is pretty interesting. As said before, Enkomi is an example of the Minotaurs distrust of the rest of the Imperium, often being the only form of face-to-helmet interaction other forces of the Imperium will have with the Chapter. And even so, one might not expect to see much exchange beyond the very minimum required to carry out whatever purging in the name of the Emperor needs to be done, as he is described as an aloof and distant figure in Carab Culln's war councils during the Badab War.
Enkomi himself is described as having a crimson-tattooed face and red-irises, suggesting backwater origins. This raises a question over the Minotaurs recruitment methods, since their ability to replenish recruits has been theorized to be a result of the High Lords granting them access to recruits from Terra. Enkomi's origins could mean that the Chapter may also recruit on the worlds it crusades across since it's fleet-based, or that they recruit normally but their aspirants have low rejection rates due to their "chimeric" geneseed.
Given his role as a Herald of the Chapter, it is only fitting that he has his own personal ride. In his case it's a black-painted ROC pattern Storm Eagle named the Fortuna Mori.
On the Tabletop
Enkomi has no extra special rules over the usual buffs of a Chaplain, usual Rosarius, powerfist, and crozius. No jump pack option since geeDubs seems to be doubling down on WYSIWYG, but his "Crozius Arkanos" has a grenade discharger that doubles the range of his grenades. Frag grenades for mobs, krak grenades for tough targets. Aside from that he boasts an extra attack and an extra wound, compared to normal. Do ask yourself when you take him though... did you really WANT to pay 23 points to gain a wound, an attack, and to double the range of the otherwise completely normal frag and krak grenades? Yes, because the Greek helmet and the cape alone are worth the 23 points, and because you get the model when you buy Moloc, so might as well use it.
As of the most recent Space Marine Codex, Enkomi is now able to chant 2 litanies.