Representing Germany, Kleiner is active in the Age of Empires II scene. The match count for Kleiner in Age of Empires II stands at 64. Kleiner tends to queue for ranked random map team matches.

Kleiner excels in the flank position: 60.0% win rate over 30 matches. Kleiner has reached a rating of 674 in RM Team. Kleiner maintains a 32.1% win rate in their 28 RM Team matches.