"Anybody can help us. Just be careful. We don't want anybody else killed," said Mark Wilde, Robert's father.
"I'm looking for the help to have community to help our family," said Tammy Wilde, Robert's mother.
Robert Wilde was killed on Sunday night.
A vigil was held in Kenosha on Wednesday night in his memory. Several hundred people gathered outside the restaurant where he was killed. They gathered as a community to grieve. Some were close friends. Many others never met Rob Wilde but his murder prompted an outpouring of emotion, sadness and a anger.
"We're all a whole family in Kenosha and supporting everybody. It is a tragedy that an 18-year-old had to get killed," said Sandra Trottier, Kenosha resident.
Wilde was just closing up at Shirl's Drive-in on Sunday when two masked men walked in apparently intending to rob the place. They shot and killed Wilde and then shot and injured the 43-year-old manager. They got away with just $14.
"This isn't an assault on this community. This is more than killing Robbie Wilde," said Chief John Morrissey, Kenosha Police Department.
Kenosha police have identified two suspected gang members as persons of interest, calling them extremely dangerous. Daniel Gonzalez, 23, is wanted on an outstanding warrant in Illinois. Julian Jerome Miller, 28, is wanted in Wisconsin. Both are from Kenosha.
The crime has united the community.
Wilde's parents were not at Wednesday night's vigil but earlier expressed hope the police find their son's killers.
"I'm asking anybody with an ounce of integrity out there and compassion to report the whereabouts of these persons that they're looking at. It is apparent that they have no respect for life," said Tammy Wilde.
Police say the two men they are looking for have been spotted within the last couple of days in Milwaukee and on Tuesday night in the Green Bay area. There is a massive man hunt underway for them now.