Representing Germany, Kleiner is active in the Age of Empires II scene. The match count for Kleiner in Age of Empires II stands at 63. Kleiner tends to queue for ranked random map team matches.

Kleiner excels in the flank position: 62.1% win rate over 29 matches. Kleiner has reached a rating of 688 in RM Team. Kleiner maintains a 33.3% win rate in their 27 RM Team matches.