Brady is extremely sensitive and vulnerable and uses his tough mannerisms as a means to mask them. This fact may be gleaned from his supports with his father, where he dismissively establishes an exterior of emotionless apathy towards the notion of being forgotten the moment the Brady of the current timeline is conceived. Upon being informed that he will neither be forgotten nor allowed to disappear from his father's life, this shell of stoic steeliness shatters, causing him to, as is his usual custom, cry as he retracts his words.