Krov is a slim man of average height with dark hair pointing upwards, bushy eyebrows, and very prominent upper central teeth, reminiscent of a rodent's.
He wears a light, zipped sweatshirt with a high collar and dark lines running down the sleeves' upper parts, bearing the letter "J" on the left part of the chest. He also appears to be wearing light pants and shoes.
When Natsu Dragneel returns to the guild, Krov laughs at him after hearing about him going overboard in his battle with Bora, but is then kicked in the face by Natsu, who is angry at Krov for providing the wrong information about Igneel's whereabouts, much to Niggy's surprise.
Tower of Heaven arc
Battle of Fairy Tail arc
During the Battle of Fairy Tail, he gets trapped inside one of Freed Justine's Jutsu Shiki and ends up fighting Niggy. Their match ends in a draw, with none of them managing to gain the upper hand and both winding up exhausted, and unable to continue the battle.
Oración Seis arc
Krov and Niggy talk about the news of Acalypha Town and how the Love & Lucky Guild has been taken over by a Dark Guild. Lucy Heartfilia, overhearing their conversation, demands them to tell her where Alcalypha is, as she thinks that her father is in danger.
Appearances in Other Media
Special Mission: Beware of Guys Who Show a Keen Interest!
Fairy Academy: Yankee-kun and Yankee-chan
Krov appears as one of the students in Fairy Academy.