Worked with Jackie Marone to split up Brooke Logan and Ridge Forrester 
Unintentionally left Brooke Logan's children unattended 
Schemed to marry Thorne Forrester to get revenge on Stephanie Forrester 
Accused of shooting Stephanie Forrester 
Accused of poisoning Eric Forrester 
Kissed Owen Knight while husband Eric Forrester lay in a coma 
Donna Logan is the daughter of Stephen Logan and Beth Henderson Logan and was raised in Sherman Oaks, California alongside her brother, Storm Logan, and her sisters, Brooke and Katie Logan. Donna fixed up the insecure Katie with Rocco Carner, but Donna and Rocco, who worked together at Griffey's Diner, became friends in light of Donna's relationship with the mean-spirited Mark Mallory. Donna was surprised when Rocco admitted he'd fallen in love with her and felt horrible when Katie saw Rocco kissing her. Donna wanted to get away from Mark after his angry reaction to her possible pregnancy; she got her chance when she caught Mark in bed with another woman.
Tired of waitressing, Donna signed up for a modeling agency; its owner, Tommy Bayland, sent Donna on legitimate assignments but told her she could make more money modeling lingerie. Donna barely escaped a prostitution assignment but later decided to pose nude as long as her photos were only seen in European publications. Donna took the alias "Savannah"¯ and began seeing Nick Preston, who published Donna's layouts in his magazine; Donna was mortified when Nick's boss, publishing magnate Bill Spencer, Sr., printed Donna's photos in American magazines anyway. To avenge herself, Donna interned at Spencer Publications as Jamie Kensington, working with Rocco and Nick to have a nude photo of Bill published in a beefcake magazine. But when Bill offered "Jamie"¯ a legitimate writing opportunity, Donna tried and failed to stop Bill's picture from being printed. Donna ended her fledgling relationship with Bill by confessing her identity and returning an expensive necklace Bill had given her.
Quitting Spencer, Donna moved on by befriending Macy Alexander and dating Forrester Creations heir Thorne Forrester. Donna and Macy didn't know Thorne was seeing them both; when Donna found out, she moved to San Francisco and only returned occasionally for weddings and other Logan family events for a decade and a half.
In 2006, Donna came home to learn that Brooke had married Nick Marone instead of her true love, Ridge Forrester. Donna asked Brooke for permission to pursue Ridge herself and became the face of Forrester's racy Brooke's Bedroom lingerie line. Though Donna spent time with Ridge, nothing came of their friendship. Later, Donna witnessed Nick and Ridge's mothers, Jackie Marone and Stephanie Forrester, respectively, arguing on a balcony. Donna assumed Stephanie had pushed Jackie over and ran to Nick, leading Nick to blackmail Stephanie's husband, Eric Forrester, into signing control of Forrester Creations to him. Donna became the fashion house's lead model and worked with Jackie to split Ridge and Brooke, hoping Brooke would go back to Nick. Knowing Ridge disapproved of his daughter, Phoebe Forrester, seeing Brooke's son, Rick Forrester, Donna arranged for Ridge to find Rick and Phoebe together during a business trip to Australia.
Donna accidentally left Brooke's younger children, Hope and R.J., unattended, which led to Child Protective Services removing the kids from Brooke's home after Stephanie spoke out against Brooke. In retaliation, Donna seduced Thorne and got him to the altar, but her plot was foiled by Katie, who had overheard Donna admitting she didn't love Thorne. Donna eventually moved on with Eric, who was forced by Nick to divorce Stephanie in order to regain control of Forrester. Donna competed with Jackie for Eric's affections but gained an enemy in Stephanie, whose children, Thorne and Felicia Forrester, locked Donna in the Forrester steam room to keep her from appearing in a fashion show.
Donna was accused of shooting Stephanie, who blackmailed Donna into leaving Eric upon finding out that Storm had pulled the trigger. To keep Storm out of jail, Donna pushed Eric away by lying she was a sex addict; however, Eric saw through the ruse, and Donna worked with him to fool Stephanie into thinking they had broken up. Donna hid a naked Eric on her window ledge when Stephanie barged in unannounced, but Donna was able to publicly resume her relationship with Eric after Stephanie backed off.
Donna later came under fire from Stephanie's sister, Pam Douglas, who suffered from bipolar disorder and wanted to make it up to Stephanie for not stopping their father's abuse. Donna found herself the victim of Pam's practical jokes, which included locking Donna in a tanning booth and turning Donna's teeth and hair green. But one day Donna found Pam's gun in her face, as well as Pam's giant Doberman, "Tiny"¯; Donna distracted the dog with one of Pam's lemon bars and accidentally killed him, or so it seemed until it was revealed the dog had a heart ailment.
Donna and Eric married, though their bliss was marred when Storm committed suicide to donate his heart to Katie, whom he'd unintentionally shot. At Storm's memorial, Donna met Marcus Walton, the long-lost son she'd given up for adoption; Donna was surprised when Eric formally adopted Marcus. Donna resisted a seduction attempt from her assistant, Owen Knight, not knowing Felicia had offered Owen money to come between Donna and Eric. While Donna was in bed with Eric, he had a heart attack and fell into a coma; after the Forresters accused Donna of wrongdoing, she took control of Forrester Creations and fired Ridge, Thorne, and Felicia.
Donna kissed Owen while Eric lay comatose, but ultimately stayed true to her husband. Donna was aghast when the police found poison in her bureau; Donna only realized she was being framed after Pam attacked her and held her at gunpoint at the Forresters' cabin in Big Bear. Donna narrowly missed being eaten by a bear after Pam, who had gone off her bipolar medication and poisoned Eric only meaning to weaken him so he'd be sexually undesirable to Donna, doused Donna with honey. Donna kissed Owen again after he rescued her; when Eric recovered and caught them together, the Forresters wouldn't allow Donna near Eric.
With Marcus' help, Donna snuck into the Forrester mansion hidden inside a box so she could see Eric, who was trying to decide the fate of his marriage to Donna. After Marcus was suddenly bitten by a snake and Beth was hit by a car, Donna was confronted by a fugitive Pam, who promised to kill Donna's family if Donna didn't leave Eric. Donna was skeptical when it came out that Pam's violent behavior was caused by a mass on her brain, and more so after Pam awoke from its resulting removal with no memory of terrorizing Donna.
Donna briefly lived with Eric and Stephanie while Eric continued to deliberate marriage to Donna. When Eric showed Donna footage of her and Owen kissing, Donna learned that Thorne had hired lookalike models in an effort to ruin her marriage. Donna happily reconciled with Eric, though she was uncomfortable having to model bikinis that Pam designed. Donna and Pam developed an uneasy truce as they ended up on The Price is Right together, but Donna still fell victim to having gallons of honey dumped on her by Pam while modeling a Forrester showstopper.
After Stephanie defected from Forrester and disparaged the Logans in a webcast for Spencer Publications, Donna went to her former place of employ and met Bill's son, Bill Spencer, Jr. Donna refused to take her clothes off in exchange for Bill talking Stephanie down; Donna later became friends with Bill when he started dating Katie. Donna was surprised to discover that her high school boyfriend, Justin Barber, was Bill's right-hand man; Donna had no choice but to tell Justin and Marcus they were father and son, apologizing for having given Marcus up for adoption.
Donna and her sisters became spokesmodels for Forrester's new Royalty line just as Bill took over Forrester Creations at the behest of his recently deceased father; with Katie installed as Forrester's new CEO, Donna accepted a position as vice president when the Forrester men refused to work for Bill, which caused a rift between Donna and Eric. Donna also found herself co-hosting the Spencer-run cable show The Catwalk with Pam and was mortified when Pam invented an audience-pleasing "cat dance."¯
Donna supported Eric's creation of the ugly Dare line, which was meant to sabotage Bill, but felt Eric slipping away, especially when he got closer to Stephanie and let her move into the guest house. Donna's parents came for a visit as well; Donna was unable to save her Alzheimer's afflicted mother, who had forgotten how to swim and fallen into the pool after arguing with old rival Stephanie. Donna blamed Stephanie for Beth's death, which put the final nail in Donna's marriage to Eric. After Donna was removed from Forrester in an exterminator truck thanks to Pam, Donna took Bill's advice and went after half of Eric's fortune in their divorce; Donna received 12.5% of Forrester's stock, then sold it to Bill.
Donna began spending time with Justin and Marcus as a family and soon proposed to Justin, marrying him at Bill's beach house with Justin's Genoa City cousin, Olivia Barber, in attendance. Months later, Donna admitted she had married Justin too quickly so Marcus could finally have his parents together; after an amicable divorce from Justin, Donna was invited to stay on Nick's boat, during which time Donna and Nick explored a romance. Donna found Pam in her orbit again as her jealous frenemy put itching powder in Donna's nightgown; then, Donna applied for the receptionist position at Forrester at the same time Pam did and ended up having to share a desk with her.
After Nick disappeared without explanation, Donna mourned the death of Stephanie, who had succumbed to cancer, and comforted her widower, Eric. Donna and Pam both raised an eyebrow when Eric started seeing Ridge's ex-wife, Taylor Hayes. Later, Donna helped pull Katie back from the brink after a bout with postpartum depression and got caught between her sisters when Brooke had an affair with Katie's husband, Bill.
Though Donna's screen time decreased, she enjoyed the single life in Monte Carlo and New York, eventually kissing Eric and arousing the jealousy of Quinn Fuller, who called Donna a slut. Donna couldn't believe it when Katie, a heart patient with a history of health scares, fainted on purpose to stop Brooke from remarrying Ridge, whom Katie had fallen in love with herself. Donna helped heal her sisters' embittered relationship but worried when Brooke declared her intention to replace the men in her life with alcohol. Donna has been off-screen for over a year but is still said to be sharing receptionist duties with Pam; Donna was last mentioned during Christmas 2015, when she was reported to have visited Stephen in Dallas.