Step 1 : Introduction to the question "Which snack food brand has a mascot named “Finn” who wears sunglasses?"
...A place to share photographs and pictures. Feel free to post your own, but please read the rules first (see below), and note that we are not a catch-all for general images (of screenshots, comics, etc.) ... Dragon DR149 FINN Sunglasses | ...This catty eyeglass features a slimly carved temple embellished with riveted dragon tail tips. The classic round lens shape is available in multiple colors, including two-tone options like Deep Red/Green. ... Finn joins Dragon's DTail collection.
Step 2 : Answer to the question "Which snack food brand has a mascot named “Finn” who wears sunglasses?"
Goldfish:
Goldfish are fish-shaped cheese crackers manufactured by Pepperidge Farm. The brand's current marketing and product packaging incorporate this feature of the product: "The Snack That Smiles Back! Goldfish!", the slogan being reinforced by Finn, the mascot with sunglasses. The product is marketed as a "baked snack cracker" on the label with various flavors and varieties. Originally invented by Oscar J. Kambly at Swiss biscuit manufacturer Kambly in 1958, Goldfish snacks were introduced to the United States in 1962 by Pepperidge Farm founder Margaret Rudkin.