Alternatively we could have his telepathy go against a Mental Check Roll to determine success, in addition to the other suggestions.
That would also work. Pretty much right now I've been trying to keep it as flavour text until I get a system down to make it not completely overpowered.
We could possibly start it off with a Mental Check to determine if I can even get into their mind or not. Couple that with a Detection Roll to see if they detect it and then after that whenever I'm doing Information Gathering I roll the 1d100.
Mental Check - 2d100, My roll has to beat their roll to get into their mind. Additionally I could give bonus' or detriments depending on if they are used to Telepathy or not, giving me a reason to not spam it so they dont build up an immunity
Detection - 2d6, 1-6 Detected, 7-10 Noticed, 11-12 Success.
Information Gathering - 1d100, Higher is better and what I get is up to the person.
Of course all the rolls will be my responbility to preform and manage. Don't want to burden you with my Race-specific trait.