2 adjectives to describe exposers

[60] Colonel Gwyllym Lloyd Wardle was the celebrated exposer of the scandal in 1808-9, when the mistress of the Duke of York was found to be trafficking in Commissions.

He was the incarnation of a fervid, living, active piety amid forms and formulas, a fearless exposer of all shams, an uncompromising enemy to the blended atheism and idolatry of his ungodly age.

2 adjectives to describe  exposers