With the impending return of injured stars, Walcott believes rival clubs should be scared.
"Everyone is a big hitter at the club," Walcott said.
"Big names are coming back, which scares other teams, and that is a nice feeling.
"They will be back soon and hopefully we can push for the Champions League spots and some trophies.
"Last year we had our bad spell towards the end of the season and hopefully we have had it in the middle this time.
"With players coming back and the team getting back their sharpness and getting goals from all sorts of positions, hopefully we are going to have a good spell now."