Xu Yue had never tested his Illusion Technique on Nick Fury. Aside from Fury's strong will and the favorable fortune surrounding a major character, there might also be safeguards on the softer side, such as clones.
If it failed, everything could spiral out of control. It was not worth the risk. Since there was a stable approach available, there was no need to take such an unnecessary gamble.
The same was why he had only used suggestions on Tony at most. Tony's ability to explode with potential was formidable. A formula casually scribbled down by him could keep other scientific geniuses researching for years. With the fortune of one of the protagonists upon him, forcefully using a control-type Illusion Technique might lead to unpredictable trouble.
But Dr. Killian clearly did not warrant so many concerns.
Though he had his own advantage and possessed the willpower to completely control the Extremis Virus, meaning the Illusion Technique might not necessarily succeed completely, he was only a minor boss. Even if something went wrong, the risk remained within manageable limits.
Under such circumstances, there was nothing wrong with trying a more direct and forceful method...
What if it worked?
Well, the results proved that minor bosses did not have a particularly high chance of overturning the tables.
Although taking this shortcut might lower the difficulty and reduce the score, this guy's own strength probably was not worth many points anyway. It was more practical to find a way to use him as leverage for other scoring opportunities...
(There were many reasons why the protagonist rarely used direct-control Illusion Techniques. Most of them had been mentioned above, and they probably would not be explained again in the future.)
"This is our partner, Mr. Potter. Everyone, get acquainted."
Killian gathered his trusted subordinates and