Zander (Full stats + contains spoilers)

Personality
Zander is shown to be somewhat of a sensible and reliable character. He acts purely on logic, meaning that he favours reason over emotion. His character is also perceived to be very rational when it comes to solving the puzzles, and his theories are often correct. He is skilled in computers and technology. Because of his logic and wit, he is extremely skilled in hacking, which connects to his role as to being The Signmaker.

His devious plan and good acting skills has made the group to believe that he is a trustworthy character. When it has been revealed that Zander was the person behind all the attacks, the others immediately realise that they have been fooled by Zander's cunning scheme. This is also lead to believe that Zander is quite a manipulating and intelligent character, considering he has hacked global security systems and was in complete control of everything happening.

Yasmin
Throughout the series, out of the 6 people in the group, Zander had been seen to be particularly closest to Yasmin. The two have gone through a lot of troubles together, and because of that they can each relate to each other. They had been seen numerous times comforting each other, for instance when Yasmin's home country was attacked. In Killswitch, Zander had been severely injured and was knocked out, showing no signs of breathing. Yasmin was the only character who immediately acted on this, and she gave him mouth-to-mouth, possibly confirming Yasmin's interest in him.

However, despite their closeness, Zander had seemed to show no sign of love interest towards her, only thinking of her as a good friend.