Somerville Public Library Comix Con from 11 a.m. to 4 p.m. Saturday at Somerville Public Library, 79 Highland Ave., in the Winter Hill neighborhood. Free.

This all-ages celebration of fandom – film and television, science fiction and fantasy, comic books and graphic novels, anime, books, cartoons, gaming and collectibles – includes an Artists’ Alley and board games room for much of the day and K-Pop Karaoke, a Make-Your-Own Magic Wand drop-in workshop, scheduled visit from the local Imperial Troopers legion (in a photo above by Suzan McEvoy) and much more, including a comic book sale that benefits the Friends of the Library. Costumes are welcome. (The library also hosts a free Star Wars Symposium from 6 to 7 p.m . Friday for the first 70 fans who show up.) Information is here.

Somerville Open Studios from noon to 6 p.m. Saturday and Sunday throughout Somerville. Free.

Explore the work of more than 360 artists of all sorts at more than 90 locations all over Somerville in this 20th year of open studios, a peel into the city’s vibrant and diverse art scene (the photography of Asia Kepka is above). Look for trolleys, volunteers and map-filled kiosks around the city to help with the experience. A kids’ art show is up at the The Center for Arts at the Armory, 191 Highland Ave. Q’s Nuts has even gotten into the spirit and turned its windows over to artists for nut-themed displays at 349 Highland Ave., not far from Davis Square. Information is here.

Kaiju Big Battel’s “Rogue Once” at 8:30 p.m. Saturday at Once Lounge + Ballroom, 156 Highland Ave., Somerville. Tickets are $25 (available in advance online or at A Curated World by Kay McGowan, 160 Highland Ave., Somerville).

Godzilla-style giant monsters meet pro wrestling in this live phenomenon. If you’ve never seen it, well, stop wasting your life. The lounge opens at 6 p.m. for pre-show tacos, pool and pinball, and at 7 p.m. a DJ spins for a meet and greet. Information is here.

The 35th Annual Mayfair from noon to 6 p.m. Sunday in Harvard Square. (Rain date: May 20) Free.

This year’s version of the spring tradition takes on the theme of “Cinco de Mayo (+1),” with Mariachi music to be performed on its main stage throughout the afternoon, added to three other places to hear music, more than two dozen dance troupes; 50-plus food vendors serving international fare and local favorites; streets full of artisans and merchants selling arts and crafts, jewelry and vintage clothing; a Church Street chalk art event that raises money for local charities; Cambridge Historical Tours events from croquet to a dress-up booth and story corner; and games and entertainment for all ages, including an all-ages Roaming Railroad train ride and beer gardens run by five local eateries. No wonder the event draws more than 100,000 people.  (Looking for a break from the open-air fun? The Brattle Theatre is running a free, repeating 45-minute MayFair Cartoon Program, starting every hour.) Information and a complete scheduled of music and other events is here.

Coro-Dante Spring Concert from 5 to 7 p.m. Sunday at the Dante Alighieri Society Center, 41 Hampshire St., Kendall Square. Free – registration is here – with donations accepted gratefully. 

The All-Italian Repertoire Chorus of the Dante Alighieri Society busts out with the choruses and songs of Gioachino Rossini with pianist Leona Cheung and professional soloists, led by director Kevin Galiè. A reception follows. Information is here.


Santo Cristo Feast Portuguese-American festival from 6 p.m. to midnight Friday, 5 p.m. to midnight Saturday and noon to 11 p.m. Sunday at Saint Anthony Parish, 400 Cardinal Medeiros Ave., in the Wellington-Harrington neighborhood.


“HMS Pinafore: The Next Generation” by the MIT Gilbert and Sullivan Players at 8 p.m. Friday, Saturday and Sunday at the Massachusetts Institute of Technology’s Stratton Student Center, 84 Massachusetts Ave. Yes, this is a “Stat Trek” themed reworking of the light opera. General admission is $15.


Cafe Zing Poetry Open Mic from 5:30 to 6:30 p.m. Sunday at Porter Square Books, 25 White St., Porter Square. Free. Sign-ups begin at 5:15 for three-minute time slots.