With a Halloween theme this year, O Heroes will host the "O"lympics on Wednesday as part of the Boys and Girls Club of Emerald Valley's Fall Festival. O Heroes, made up of student-athletes from every varsity team at Oregon, will be at the 1545 West 22nd Avenue Boys and Girls Club location from 3-5:30 p.m. on Wednesday, with a variety of activities.Any child can attend, not just members of the Boys and Girls Club.