... the animosity between Klaw and T'Challa ?
In the comics, Klaw's mercenaries murdered T'Chaka and, then, Klaw was injured by T'Challa.
... but in the MCU, Klaw was injured by Ultron and Zemo murdered T'Chaka.
So, how do you think that Klaw will become the nemesis of T'Challa in the future movie ?
With the brand/tattoo already on his body, Klaw has been in and out of Wakanda, so there's a little bit of backstory we don't know about. I wouldn't be surprised if T'Challa gave him that mark. But I guess Klaw will be making his way back to Wakanda, either by being hired, or not being able to resist the plunders Wakanda has to offer. I have a feeling the script will mirror what Ta-nehisi is doing now in his book, political instability with Killmonger being with the 'rebels'. I wouldn't put it past him to hire Klaw. I hope T'Challa thaws the Winter Soldier for an ally.