Building and using Karl in Fate War in one of your legions require a couple of things to be in place. We have here everything you need to make your Karl perfrom as strong as possible in all situations with the ideal invest possible so save your resources and make you progress faster.
Current Ranking – is Karl S-Tier, A-Tier, or D-Tier?!
Tier AHere is a quick overview of the rankings of Karl for the different game modes. Please refer to the full tier list linked below to see the ranking of all heroes in Fate War and full evaluation and priority.
Skill Order
You can choose what skills you upgrade in Fate War, but that makes upgrading still a complex and crucial part of building your heroes unless you spend a lot of money on the game.
Do NOT follow the rec. Skill Order in the game, it is not the ideal order on how to upgrade your skills!!
Skill 1
Skill 2
Skill 3
Skill 4
Expertise
+1 Level
+1 Level
+1 LevelUnlock with PRO Hide plans
Best Troop Types
Early on the pairing here is not too interesting and use what you have
Best Hero Pairing for Karl
Pair him with Reid for the best synergy
Best Talent Builds For Karl
Below you will find the talent tree build(s) for Karl that make sense when running as the primary commander in any march in Fate War. Please also refer to the description below each talent tree as I explain a general route on how you should spend your talents there + some additional background for each talent build that I very likely will appreciate.

This is so far the ideal talent tree. Please be aware that this is from the beta test so small adjustments are possible but we will do them if needed as soon after global release as possible
Conclusion
I hope this guide for building Karl helped you investing without wasting much time and resources in Fate War. If you liked it or you further questions (or maybe also annnotations that you believe should be added here in this guide), please don’t hesitate to post them below in the comment section. Thanks for reading and have a great day.