The Belgium international has completed his move from Sunderland after putting pen to paper on a long-term contract, and he is set to battle against Reina and Brad Jones for a starting berth at Anfield
Reina has been closely linked with a return to old club Barcelona over the last few months but the Spaniard insists he sees his future at Liverpool, while manager Brendan Rodgers has also stressed Mignolet has not been signed as a replacement for the 30-year-old.
If Reina does remain with Liverpool, Mignolet faces a fight to dislodge the long-serving first-choice but the 25-year-old insists he is up for the challenge and has complete confidence in himself.
"It's a challenge, but that's what you want. You want to play in the big games, you want to play for a big club and to play with pressure," said Mignolet, whose transfer fee could rise to more than £11million.
"I'm very confident in myself and my own abilities and I can't wait to get the first clean sheet under my belt.
"I've never been a nervous person. I'm quite confident in my own abilities."