Megalon (Showa)

Godzilla · Toho films · Seatopian Insect God

Powers and abilities

Superhuman Physical Characteristics
Longevity
Large Size (Type 1; 55 meters)
Underwater Breathing (Type 2)
Enhanced Senses (He possesses eyesight superior to that of humans by a hundredfold due to his compound eyes)
Expert Hand-to-Hand Combatant
Acrobatics
Natural Weaponry/Sound Manipulation (Megalon's horn doubles as a radar)
Minor-Flight
Electro-Magnetism Manipulation (Explained here)
Drill hands
Able to spit Napalm Bombs
Body Control/Underground Mobility (Megalon can drill through the ground at Mach 3)
Temperature Manipulation (With "High Temperature Geothermal Napalm")
Air Manipulation (Megalon is able to produce wind gusts with his wings, reaching speeds of 1,000 meters per second and powerful enough to decimate buildings)
Enhanced Senses Resistance to Radiation
Extreme Heat
Fire
and Bone Manipulation (Boneless)

Megalon seems more interested in tormenting his opponents than actually killing them, using his many powerful abilities sparingly

Ranked tied for #23 of 562 in Godzilla by strength.

Megalon (Showa) vs Young Link (Hyrule Warriors) (The Legend of Zelda · Tier 4-C): Young Link · Slight edge
Megalon (Showa) vs Bearer of the Curse (Dark Souls · Tier 4-C): Too close to call
Megalon (Showa) vs Captain America (Marvel Tōkon) (Marvel · Tier 4-C): Too close to call
Megalon (Showa) vs Trelane (Star Trek · Tier 4-C): Too close to call
Megalon (Showa) vs Star Eater (Yu-Gi-Oh! · Tier 4-C): Too close to call
Megalon (Showa) vs Nobody No-One (Doctor Who · Tier 4-C): Nobody No-One · Favored
Megalon (Showa) vs Devil Castle Cannon (Dragon Ball · Tier 4-C): Too close to call
Megalon (Showa) vs Superman (DC Extended Universe) (DC · Tier LOW 4-C): Too close to call