|Intimacy Level:|| Good Friends|
They are good friends and care for each other, especially being part of the same club. Even though now and then they would have a "Diva-Off" and have a repetitive rivalry, they always end up being good friends in the end.
Mercedes and Rachel are the first few members of the Glee Club and since day one they have been both fighting for the spotlight. Although they both get along most of the time, their appears to be some rivalry and tension between two, especially on Mercedes part. This is mainly because Mercedes believe they are just as good as each other however Rachel seems to always get the attention. However, when they are not competing they seem to care for each other especially since Rachel helps her out during Prom Queen.
In season one Rachel appears to get the majority solos and duets and it appears that both of them get along, however Mercedes felt some resentment towards Rachel. Until Mercedes sings And I Am Telling You I'm Not Going, Rachel has doubted Mercedes' level of talent believing her to not be a strong balladier as she was. Because of Mercedes' well-received rendition of the song, they plan to have Mercedes sing the ballad, however because of the set list leak, Rachel sings the ballad.
In season two, they appear to get along even having a sleepover at Rachel's house with Kurt. As part of Sue's plot to turn the Glee Club against each other she uses their rivalry to turn themselves against each other. They both sing Take Me or Leave Me as a duel but end up smiling at the end. Then as part of their fundraiser for Nationals, Mercedes shows a spoiled diva attitude towards the club, making unreasonable requests for her performance (however this attitude was instigated by Lauren Zizes). Mercedes refuses to perform until she was confronted by Rachel, saying that she doesn't understand how she doesn't get the spotlight and how she always does. Rachel replies that she doesn't know. Mercedes sings Ain't No Way and Rachel, saying that she couldn't top that allows Mercedes to be the closing number. In Prom Queen, Mercedes doesn't have a prom date and this upsets her. Rachel seeing how upset Mercedes is says she also doesn't have a date, and invites her for a prom on a budget with Sam.
In Season Three, they both compete for the role of Maria in McKinley's production of West Side Story. Mercedes and Rachel hug, but her boyfriend Shane asks why she does it because she is her competition, stating that she is better than Rachel. Mercedes, following Shane's advice, sings Spotlight, as she is feeling second best to Rachel. The directors of West Side Story; Coach Beiste, Artie, and Emma, can't decide who will play Maria so they decide that they should do a diva off, where both of them sing Out Here On My Own. Emma informs both of them that they have both got the role of Maria where they will extend the production for another week so both girls get to sing for 4 shows and 2 matinees. Mercedes has enough of it saying that no one wants to hurt Rachel so she storms out, leaving New Directions and joining the Troubletones. After a few weeks it appears that the two are on good terms and following the Troubletones loss at Sectionals Mercedes rejoined the New Directions. Mercedes was even one of the first people that Rachel told about her engagement to Finn . Although initially she didn't support the idea, in Heart she sings along with the God Squad as a Valentine's present for Rachel from Finn.
Mercedes and Rachel don't get along very well, due to them both wanting the spotlight in New Directions. In the uncut version of the pilot, Rachel looks down on Mercedes, causing Mercedes to insult Rachel. It then leads to an argument and Rachel storms out of rehearsal.
Mercedes threatens Rachel because she nearly kicks her during a glee rehearsal. This threat was in 'Mercedes regular diva style', not a dark threat. Mercedes says she is tired of hearing Rachel speak.
Rachel and Tina inform Mercedes that Kurt is gay to spare her feelings, showing Rachel cares about Mercedes.
Mercedes votes against Rachel's idea of practicing for the boys vs girls mash-up contest and also takes credit for Rachel's song selection.Mr. Schuester's absence, New Directions must arrange their own song selection. Rachel offers to sing a ballad, but Mercedes says that she is just as good and to demonstrate this she belts out And I Am Telling You I'm Not Going. Rachel says she can't wait to hear her perform it at Sectionals, they hug, and therefore become best friends. However, in the end, Rachel ends up singing Don't Rain on My Parade at Sectionals, as the Glee Club of Jane Adams Academy, stealing their set list, performs Mercedes' solo.
They are shown walking through the corridors together with Kurt, happy, and friendly with each other, until they get slushied by Karofsky.
Rachel asks Mercedes and the other glee girls advice on her relationship with Jesse.Shelby Corcoran is her mother. The next day, Mercedes and Quinn tell the Glee Club, proving that Rachel told them, meaning she trusts them.
Mercedes comforts Rachel about her break-up with Jesse (in the background on the Glee Club's way back to the choir room).
Rachel suggests to Mercedes and Kurt that they try to put Sunshine off of joining Glee Club, as it may result in them losing solos (although she is actually worried about losing solos herself). However they disagree to this, showing that although rapidly becoming friends, Mercedes and Rachel don't always agree.
Mercedes and Rachel are two of the people praying for Burt in song.
Mercedes and Rachel take the leads in Start Me Up/Livin' on a Prayer.Silly Love Songs, they are at a sleepover together at Rachel's house, Mercedes gives Rachel advice on being single and focus solely on her career, Rachel ignores this advice though. Take Me or Leave Me from RENT. Mercedes and Lauren are the only two glee girls not to copy Rachel's clothing style.
Mercedes refers to Rachel's party as the "The Rachel Berry House Party Train Wreck Extravaganza."
Mercedes is upset about Rachel and Sunshine getting the closing spot not her. Lauren Zizes notices this and suggests to make diva-like demands to get the respect she deserves. On the night, Rachel tries to keep Mercedes happy but Mercedes eventually leaves to sit in her car. Rachel finds her and Mercedes says that she doesn't understand why Rachel gets all the solos. Rachel comforts her and concludes that they are both equally good singers and Mercedes should go and perform. Rachel also says that she couldn't top Mercedes' rendition of Ain't No Way, and that Mercedes gets the closing spot.
Mercedes enmity towards Rachel leads her to quit New Directions, and join Shelby's, group. In Asian F, they share a hug, wishing each other good luck on who gets the part of Maria in West Side Story. Shane, Mercedes' boyfriend, isn't happy that she's friends with the "competition" and tells Mercedes she is much better than Rachel. This leads Mercedes to become even more obnoxious, tearing apart the friendship Mercedes and Rachel once had.
They are shown laughing together and putting their arms around each other during the song with the same name as the episode, showing they are at least back on good terms.We Are Young. Rachel even hugs Mercedes as Mercedes sings.
Mercedes, along with Kurt, has a sleepover at Rachel's house where they are seen to be sharing popcorn. Rachel reveals that she is engaged to Finn. To this, Mercedes questions her sanity, wondering why she had accepted the proposal.
The God Squad, which Mercedes is part of, is singing Stereo Hearts as a telegram from Finn to Rachel. During the performance, Mercedes places her hand around Rachel's arms. Mercedes and the rest of the Glee Club members are shocked, when Rachel and Finn announce their marriage earlier in the episode. Mercedes and Rachel are singing Love Shack together at Breadstix, during Sugar's party.
They were hugging and holding hands in several scenes, as graduation nears. They sang together in You Get What You Give. Rachel, Mercedes, Finn, Quinn, Mike, Santana, Kurt and Puck later graduate in the auditorium, receiving their diplomas. Rachel later hugs Mercedes during Roots Before Branches. She only hugs Mercedes, Kurt and Will, suggesting they are the three people she is closest to aside from Finn. This is the last time Mercedes is seen in Season Three.
This is the first episode in Season Four that Kurt and Rachel see Mercedes. Mercedes welcomes them both back to McKinley. She says that it's good for them to come and that the kids are ready to bring the house down. Mercedes also mentioned about her busy UCLA schedules and her back-up vocals. She invites both Rachel and Kurt to come and say hello to the cast.
She then brings them to the stage with Kurt seeing Blaine, and Rachel seeing Finn, which is probably a tight spot for both. Mercedes notices the tension and leaves giving an excuse that she'll walk the kids through their warm-up.
Rachel imagines Mercedes as one of her back-up vocalists in her rendition of Don't Stop Believin'. She later told Kurt about it.
Rachel and Mercedes are helping Blaine get ready for his proposal to Kurt. They are seen guiding him to the staircase while singing All You Need Is Love.
Sang Together (In a Group Number)
- And I Am Telling You I'm Not Going by Jennifer Holiday. (Sectionals)
- Beautiful by Christina Aguilera. (Home)
- Spotlight by Jennifer Hudson. (Asian F)
- Fix You by Coldplay. (Asian F)
- Stereo Hearts by Gym Class Heroes ft. Adam Levine. (Heart)
- They have both dated Puck for only one episode. Mercedes dated him in Laryngitis and Rachel in Mash-Up.
- They were both known as the divas of New Directions.
- They were widely considered to be the best singers in New Directions.
- They both consider each other to be equally good at singing.
- They have both been best friends with Kurt, albeit at different times.
- They both have different ideas of what a "diva" is.
- There's only one episode between season one and three that neither of them sang in, Big Brother.
- Both were enemies/rivals with Santana Lopez before becoming friends with her.