Dexter "Dex" Walker is a fictional character from the Australian soap opera Home and Away, played by Charles Cottier.

Tom Green originated the role, but when the Walker family returned in 2010, Cottier took over the part.

[3] Cottier auditioned for the role on the Gold Coast and he received a call asking him to come to Sydney the following day.

[8] Describing the character in an interview with the official Home and Away website, Cottier said: "He's quite a strange boy.

[9] Following his return, Dexter falls in love with Sid's new partner Marilyn Chambers (Emily Symons).

[10] Cottier told Inside Soap magazine that the storyline was embarrassing because of the age difference between the characters.

"[10] In July 2013, Cottier's co-star Teri Haddy (Rosie Prichard) confirmed to a TV Week reporter that he would be leaving the show, along with Rhiannon Fish (April Scott).

"[11] Dexter and his family move to Summer Bay after his father, Sid, finds employment at the local hospital, covering for Doctor Rachel Armstrong (Amy Mathews) while she takes maternity leave.

The following year, Dexter arrives at Sid's house along with Indigo, where they reveal that they are not moving to Europe with Jody.

When Sid does not arrive, Marilyn discovers messages from him on her phone and realises that Dexter lied because he has feelings for her.

Dexter visits Marilyn once again and when she receives news of Alf Stewart's (Ray Meagher) arrest, he comforts her.

As Dexter prepares to tell Marilyn about his feelings, she calls wanting to invite Sid for dinner.

Dexter buys a goldfish and meets Adrian Hall (Phoebe Tonkin) who works at the pet store.

He meets Adrian at the Surf club and after becoming worried, leaves the date to asks Indigo for advice.

She initially refuses but Robert Robertson (Socratis Otto) encourages her to go to find information on the murder of Penn Graham (Christian Clark).

However, when Detective Graves tells him to get over his need to replace his mother with an older woman, Dexter takes a dislike to her.

Leah Patterson-Baker (Ada Nicodemou) asks Dexter to talk to her son VJ Patterson (Felix Dean) who is starting secondary school, about attending Summer Bay High.

Dexter begins filming people with a video camera and is caught by Casey Braxton (Lincoln Younes) who is a member of a surfing gang named The River Boys.

Dexter takes Kate Hanlon (Mikayla Southgate) on the trip to make April jealous.

Dexter and the rest of the Walker family discover that Sasha has been assaulted repeatedly by her boyfriend Stu Henderson (Brenton Thwaites).

April, Who has broken up with Heath becomes jealous of Dexter's and Lottie's friendship when Colleen Smart (Lyn Collingwood) tells her that they are dating when they are, in fact, not.

On moving day, Dex borrows Indi's car and crashes it, when the brakes fail to work.

Ruby Buckton (Rebecca Breeds) later admits that she cut the brake line, but did not intend for Dex to get hurt.

Sid had considered sending him to a rehab facility which specialises in brain injury but changes his mind after Dex vehemently refuses to go anywhere except back home.

Dex begins to train as a nurse but struggles with seizures, which often take place as a result of stress.

April gets a work placement in Paris and the couple move there straight after their wedding with Sid driving them and Indi to the airport.

Holy Soap describe Dexter's most memorable moment as: "Doing his best impression of David Attenborough to report on the breakdown of his family's car as they drove back to Summer Bay.

"[7] In December 2010, Cottier received a nomination in the "Most Popular New Male Talent" category at the 2011 TV Week Logie Awards.

[12] Sarah Ellis of Inside Soap said that the magazine's staff love Dexter and were upset at the prospect of him remaining single, when April reconciled with Xavier.