Question: Which star of Portlandia is also a bandleader in The 8G Band?

Context paragraphs:
Fred Armisen: Fereydun Robert "Fred" Armisen (born December 4, 1966) is an American actor, comedian, voice artist, screenwriter, producer, singer, and musician.  Widely known as a cast member on "Saturday Night Live" from 2002 until 2013, Armisen has portrayed characters in comedy films, including "EuroTrip", "", and "Cop Out".  With his comedy partner Carrie Brownstein, Armisen is the co-creator and co-star of the IFC sketch comedy series "Portlandia".  Armisen founded ThunderAnt.com, a website that features the comedy sketches created with Brownstein, and is the bandleader for the "Late Night with Seth Meyers" house band, The 8G Band.

Late Night with Seth Meyers: Late Night with Seth Meyers is an American late-night talk show hosted by Seth Meyers on NBC.  The show premiered on February 24, 2014 and is produced by Broadway Video and Universal Television.  It is the fourth incarnation of NBC's long-running "Late Night" franchise.  The show also stars bandleader Fred Armisen and the 8-G Band, the show's house band.  "Late Night" is produced by former "Saturday Night Live" producer Mike Shoemaker and executive-produced by Lorne Michaels.  The show records from Studio 8G at 30 Rockefeller Plaza in New York City.

The 8G Band: The 8G Band is the house band for "Late Night with Seth Meyers".  The band is led by "Saturday Night Live" alumnus Fred Armisen.  He assembled the 8G Band, named for the studio where the show is taped, just two weeks before the test show.  He texted friends Seth Jabour, Syd Butler and Eli Janney ("What are you guys doing this week?") , then found first drummer Kimberly Thompson through an audition.  Guitarist Marnie Stern later joined as well.  After Thompson left the band, guest musicians frequently sit in often for an entire week.  Some notable names to sit in on the drum kit include: Patrick Carney, Chad Smith, David Lovering, Kenny Aronoff, Jon Theodore, Nicko McBrain, Matt Sorum, Brad Wilk, Darren King, Danny Carey, Abe Cunningham, Dave Lombardo, Brann Dailor, Jimmy Chamberlin, Matt Cameron, and Abe Laboriel Jr. as well as other guest musicians.  Additionally singer, guitarist: J Mascis, Bob Mould and others have also sat in with the band.

Muncelu Mic mine: The Muncelu Mic mine was a large open pit mine in the western of Romania in Hunedoara County, 16 km southeast of Simeria and 387 km north-west of the capital, Bucharest.  Muncelu Mic represents one of the largest iron ore reserves in Romania having estimated reserves of 6.5 million tonnes of ore.  When it was operational it produced around 200,000 tonnes of iron ore/year.  The mine also has a gold and silver reserves of around 5.4 million tonnes grading 1g/t gold and 8g/t silver resulting 173,000 oz of gold and 1.38 million oz of silver.

Portlandia (TV series): Portlandia is a sketch comedy television series set and filmed in and around Portland, Oregon, starring Fred Armisen and Carrie Brownstein.  The show is produced by Broadway Video Television and IFC Original Productions.  It was created by Fred Armisen and Carrie Brownstein, along with Jonathan Krisel, who directs it.  It debuted on IFC on January 21, 2011.

Alcian blue stain: Alcian blue or alcian blue ( ) is any member of a family of polyvalent basic dyes, of which the Alcian blue 8G (also called Ingrain blue 1, and C.I. 74240, formerly called Alcian blue 8GX from the name of a batch of an ICI product) has been historically the most common and the most reliable member.  It is used to stain acidic polysaccharides such as glycosaminoglycans in cartilages and other body structures, some types of mucopolysaccharides, sialylated glycocalyx of cells etc.  For many of these targets it is one of the most widely used cationic dyes for both light and electron microscopy.  Use of alcian blue has historically been a popular staining method in histology especially for light microscopy in paraffin embedded sections and in semithin resin sections.  The tissue parts that specifically stain by this dye become blue to bluish-green after staining and are called "Alcianophilic" (akin to "eosinophilic" or "sudanophilic").  Alcian blue staining can be combined with H&E staining, PAS staining and van Gieson staining methods.  Alcian blue can be used to quantitate acidic glycans both in microspectrophotometric quantitation in solution or for staining glycoproteins in polyacrylamide gels or on western blots. Biochemists had used it to assay acid polysaccharides in urine since the 1960s for diagnosis of diseases like mucopolysaccharidosis but from 1970's, partly due to lack of availability of Alcian and partly due to length and tediousness of the procedure, alternative methods had to be developed e.g. Dimethyl methylene blue (DMB) method.

Marnie Stern: Marnie Stern is an American musician, singer-songwriter, and guitarist.  She has garnered acclaim for her technical skill and tapping style of guitar play.  Stern is also a current member of The 8G Band from the show "Late Night with Seth Meyers".

Packed red blood cells: Packed red blood cells, also known as red cell concentrate and packed cells, are red blood cells that have been separated for blood transfusion.  They are typically used in anemia that is either resulting in symptoms or when the hemoglobin is less than 70-80 g/L (7-8 g/dL).  One unit brings up hemoglobin levels by about 10 g/L.  Repeated transfusions may be required in people receiving cancer chemotherapy or who have hemoglobin disorders.  Cross matching is typically required before the blood is given.  It is given by injection into a vein.

Eli Janney (musician): Eli Janney is an American record producer and engineer born in Washington, D.C..  Janney plays bass and keyboards, as well as singing backing vocals in indie rock/post-hardcore band Girls Against Boys.  He currently plays keyboard and sometimes leads the 8G band on the Late Night with Seth Meyers show on NBC.  He is also the co-host of SonicScoop's InputOutput Podcast, along with Geoff Sanoff of the band Edsel

Nutty Bars: Nutty Bars in the United States are a snack manufactured by McKee Foods under the brand title of Little Debbie.  The snack consists of four wafers sandwiched together in a peanut butter mixture and covered in chocolate.  The packages generally come in sealed packs of 2 wafers.  A serving size (57g), has 310 calories, 18g of fat with 8g of it being saturated fat, and 20g of sugar.  They are now referred to as "Nutty Buddy" due to a name change.

Supporting paragraphs: Portlandia (TV series) Fred Armisen
Answer: Fred Armisen